Operations & Support

    Water Treatment O&M Companies

    Operations & maintenance contractors running water and wastewater assets under performance-based agreements.

    201 providers

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    Gearing Recruitment Solutions (GRS Ltd) logo

    Gearing Recruitment Solutions (GRS Ltd)

    United Kingdom

    Gearing Recruitment Solutions (GRS Ltd) is a leading technical recruitment agency with over 20 years of experience in the industry. Our team of experts specialises in providing white-collar permanent and freelance recruitment solutions for construction and water industries. We have supported large tier one M&E contractors through to local regional-based businesses in construction, ensuring that the companies we partner with share similar values and principles to us. This ensures that the candidates we place have the best opportunity to progress and develop in their careers. In the water industry, we have extensive experience in MEICA engineering for large industrial contracts and have recruited for top Tier 1 civils and infrastructure companies within construction, maintenance, and consultancy engineering. We have also partnered with large and regional MEICA contractors to provide recruitment solutions for AMP frameworks across the UK, including Thames Water, Southern Water, Severn Trent, United Utilities, and Scottish Water. Our recruitment services include positions such as: M&E Construction: Senior Appointments/Directors M&E Operations Manager Mechanical Project or Contracts Managers Electrical Project or Contracts Managers M&E Estimators, M&E Quantity Surveyors M&E Supervisors M&E Managers for main contractors Water: Directors Framework Managers Proposal Managers/Estimators, MEICA Managers MEICA Project Engineers Mechanical Supervisors Electrical Supervisors Quantity Surveyors Design Engineers/CAD Commissioning Engineers Process Engineers Health & Safety Sub Agents Civil Engineers At GRS, we pride ourselves on our honesty, true partnership, passion for our sector, and a continuous ambition to improve our technical knowledge. This allows us to perfectly position ourselves to cover all of your recruitment needs.

    Recruitment
    AE Yates Group logo

    AE Yates Group

    United Kingdom

    Established in 1870, AE Yates is a progressive civil engineering contractor with an enviable track record of successfully delivering technically demanding high quality works to the complete satisfaction of a wide variety of public and private customers. An Integrated Construction Company A E Yates has grown to be an integrated construction company with a turnover of £50m, employing over 170 managerial, professional, technical and operational staff. Our company headquarters, based in Bolton, are strategically located to serve and communicate with clients throughout the United Kingdom with immediate access to road, rail and air transport facilities. We also have an operating base in Sheffield. AE Yates Group The group companies add value for customers not just in their specialism. When working together they can offer an integrated service through resource sharing and joint management of activities. Operational interfaces are removed eliminating potential co-ordination, management and programming issues for customers. AE Yates Civil Engineering Ltd AE Yates Directional Drilling Combined Soil Stabilisation Side Grip Piling SPI Piling Tritech Ground Engineering AE Yates Haulage Equipment and Skills Investment in the development of highly skilled operational teams up to date equipment has reinforced and enhanced our capability in all areas of operations. We own and operate an extensive fleet of general civil engineering and specialist plant and equipment. Experienced and Dedicated We are a highly experienced and respected civil engineering contractor operating to an Integrated Management System which is fully accredited to IS 9001:2015, ISO14001:2015 and ISO45001:2018 by BSI. We are fully committed to meeting the required standards of quality, customer care, environmental awareness, safety, health, time and cost demanded by our clients. We are fully supportive of the UK industry’s drive towards Continuous Improvement, Best Value and Constructing Excellence.

    Renewables & Energy Management
    Contractors
    ERG (Air Pollution Control) Ltd logo

    ERG (Air Pollution Control) Ltd

    United Kingdom

    ERG (Air Pollution Control) Limited is the leading supplier of wastewater odour control units (OCUs) for the UK Water Industry and increasingly supplies odour control systems around the world. In addition, ERG can provide specialist advice and solutions to assist in achieving IED compliance for relevant odour assets. In the past 10 years, we have provided over 200 OCUs and count all the UK water companies and major main contractors among our clients. So, whether you are looking for a large, multi-stage chemical scrubbing system, an environmentally friendly bio-trickling filter or bio-scrubber system, a simple but efficient activated carbon or dry media system, an Odorgardâ„¢ from ERG Hygrade, or even an RTO (Regenerative Thermal Oxidiser) system, ERG can develop a tailor-made solution to suit. All ERG Odour Control Systems are: Purpose-designed by our process engineers to eliminate the cocktail of inlet odours to the required standard. Optimised to give the best value capital and running costs. Built and tested to current BS EN and WIMES specifications. Guaranteed to achieve the required discharge odour concentration and supported by our skilled and experienced maintenance team. Minimising non-compliant emissions to atmosphere by regular, planned maintenance protects your reputation and saves you money. Our maintenance department can help keep your air pollution and odour control systems running effectively and at the lowest operating costs. Our specialist engineers are experts in maintaining most types of odour and air pollution control equipment and always work to the highest safety standards. We often save clients many thousands of pounds by repairing and enhancing dilapidated air pollution and odour control equipment. We are a framework supplier for odour control maintenance to Southern Water, Scottish Water and Thames Water, regularly maintaining more than 120 sites.

    Treatment Works Products/Services
    Frontier Pitts Ltd logo

    Frontier Pitts Ltd

    United Kingdom

    Frontier Pitts is the British manufacturer of high security perimeter equipment solutions. Our large portfolio of products, comprehensive range of services and extensive Research and Development program and integrated turnkey solutions ensures that Frontier Pitts can meet the requirements of any high security application, whilst remaining at the forefront of design and technology. Frontier Pitts is the British manufacturer of Security Gates, Automatic Barriers, Roadblockers, Rising & Static Bollards, Pedestrian Control Gates & Turnstiles, and the Anti Terra Hostile Vehicle Mitigation (HVM) range which has been successfully IWA14 & PAS68 impact tested. Frontier Pitts is more than a manufacturer, with the ability to provide a complete range of services including design, site surveys, manufacture, installation, civil and electrical services, maintenance, spares, repair or refurbishment and full project management. As both the manufacturer and supplier we feel that maintenance is an integral part of your equipment. Our range of Maintenance Contracts are designed to suit individual site requirements and include response times of just 4 hours. Accreditations include ISO 9001, Secured by Design, CHAS and Safe Contractor. As one of the founding members of the PSSA (Perimeter Security Suppliers Association), Frontier Pitts was one of the first members to volunteer themselves to be audited by the trade association, applying to meet the new product verification scheme. The PSSA Verification recognises Frontier Pitts promise to provide our clients with the high end quality product and a fully comprehensive customer service package. Our products secure some prestigious sites internationally and in the UK including the Houses of Parliament and we provided Terra equipment for the London 2012 Olympics. Within the Water Industry, our equipment protects Thames Barriers, Dartford Creek, and various other sites nationally for Thames Water, Bristol Water and Anglian Water to name a few.

    Security Solutions
    Project Support Systems logo

    Project Support Systems

    United Kingdom

    Industry leading Document Management Services for the Construction Industry Originally founded to provide operations and maintenance manuals to the water industry, PSS is now a leading provider of administrative services to the construction industry supporting projects from inception to closedown with a focus on quality and efficiency in achieving project aims. Our service is centred around a collaborative, client-centric approach, ensuring that our processes efficiently adapt to prioritise our clients’ requirements. Our steadfast dedication lies in providing a service portfolio deeply rooted in essential tools and processes, all aimed at empowering and bringing our clients processes to the forefront. We specialise in supporting project management and engineering teams within the construction industry on a number of levels, whether this is helping the dynamic sub-contractor fulfil specific client requirements, or writing operation & maintenance manuals, Health & Safety files, CDM site setup documentation and producing site graphics for new installations. We best describe our services as the collaborative glue that supports and enhances the existing business process. From conception to implementation, PSS provide end-to-end development and support for your business process and documentation needs with the overarching goal being to provide time and cost efficiencies alongside an increase in quality. Whether your product is physical or serviced based, high quality documentation will be one of your key deliverables. At PSS, we align the most accurate and detailed information to the most suitable and engaging design to provide you with high quality documentation.

    Networks - Sewerage
    Technical Documentation
    Pump Supplies Ltd logo

    Pump Supplies Ltd

    United Kingdom

    At Pump Supplies, our mission is simple. We aim to lead the way in both innovative pump solutions and customer satisfaction. We believe that our success is driven by the success of our customers. That’s why we’re dedicated to delivering services that not only meet but exceed expectations in functionality, durability, and cost-efficiency. Products We offer a comprehensive range of submersible pumps, including drainage, sewage, and slurry pumps. Each product is selected for its quality and performance, ensuring you receive the best possible equipment for your specific needs. Services Beyond our extensive product range, we provide full-service solutions encompassing installation, maintenance, and repair. Our team of experts is equipped with the knowledge and tools to ensure your pumping systems operate smoothly and reliably. Custom solutions Understanding that each setting has its own unique challenges, we specialise in creating custom pump setups tailored to your specific operational requirements. Our engineers work closely with you to design systems that not only perform well but also contribute to your operational efficiency. We will also work alongside you when it comes to the monitoring and control of your pumping equipment

    Treatment Works Products/Services
    Designers
    SEEPEX UK Ltd logo

    SEEPEX UK Ltd

    United Kingdom

    SEEPEX is a leading worldwide specialist in the design, manufacture and application of progressive cavity pumps, macerators and digital solutions which optimise uptime and reduce downtime to give an optimal TOTEX solution. Our products and expertise are applied in most applications in the wastewater industry wherever thin to highly viscous and high % DS media is conveyed. Each solution is custom-configured to suit our customers’ requirements. Pump Technology 4.0 SEEPEX Digital Solutions incorporating the Pump Monitor turn the progressive cavity pump into an intelligent field device, operating in a networked system of smart products, services and processes. SEEPEX cloud-based service provides online remote monitoring and management of the pumps and process. Data collection and advanced analytics enable process and pump optimisation and reduce inspection, downtime and operating costs, facilitating predictive maintenance and timely delivery of spare parts to improve overall equipment and plant efficiency. Unlocking the Power of Digital Our latest innovation, the most intelligent progressive cavity pump in the world, allows remote adjustment to maintain pump performance without onsite manual intervention. With SEEPEX unique SCT AutoAdjust technology, combined with our digital solutions, site visits for maintenance are eliminated and access to otherwise hard to reach pump installations can be carried out remotely. Energy Efficient Long Distance Pumping of Dewatered Sludge Our dewatered sludge handling solutions include Smart Air Injection (SAI) technology, an energy efficient system delivering energy savings of approximately 40% by combining a progressive cavity pump with pneumatic dense phase conveying to transport 14-40% DS sludge over long distances up to 1,000 meters. This alternative to conventional technologies has proven to significantly reduce operational (energy, spare parts and downtime) and total investment costs. Patented Solutions for Smart Maintenance. Fast and Simple. SEEPEX continues to extend its world class portfolio of maintain-in-place technologies for pumps with capacities up to 300m3/hr and 48 bar, able to handle flowable to highly viscous products with a high % DS content. The new patented BNM range has been designed to simplify customers’ maintenance and can reduce maintenance time by up to 80% with a significant reduction in related costs. SEEPEX latest ease of maintenance solution for big pumps complements our Smart Conveying Technology (SCT), launched in 2008 and still setting standards in the maintenance of smaller standard progressive cavity pumps, and Drive Joint Access (DJA) technology for open hopper pumps. All of these patented solutions increase uptime and plant availability.

    Renewables & Energy Management
    Chemical Dosing
    Te-Tech Process Solutions logo

    Te-Tech Process Solutions

    United Kingdom

    Te-Tech Process Solutions is a provider of traditional products and advanced process technologies for water and wastewater treatment. Our products cater for a range of client needs from standardised products to bespoke applications designed to meet the exacting needs of the client’s process. Our in-house capability includes process, mechanical and electrical design, off-site manufacture and assembly, MCC and Control Panel Manufacture and System Integration. Our extended services include digital engineering, service and maintenance, operational support and real time control. Advanced technology and innovation are at the core of our business enabling us to provide high quality, efficient solutions to our clients. Our business is founded upon 4 key areas of expertise: WATER & WASTEWATER TREATMENT Te-Tech deliver established water and wastewater products and processes, including: te-cyc TM: Cyclic activated sludge ‘Macrofloc’ biological wastewater treatment te-saf TM: Packaged submerged aerated filters te-ion TM: Advanced oxidation technology for water and wastewater treatment te-mem TM: Advanced membrane filtration te-mbr TM: Package advanced membrane filtration te-sewpas TM: Airlift sludge removal plant te-uv TM: UV disinfection AUTOMATION CONTROL & TECHNOLOGY Our MCC and control panels are provided into multiple sectors including process and water, marine, oil & gas, energy, nuclear, defence and building services. Our capabilities include: MCCs LV Switchboards Local Control Panels Software System Integration DIGITAL ENGINEERING Te-Tech utilise cutting edge digital technologies to provide innovative solutions to our client’s problems. Our digital engineering services support the whole life cycle of our clients’ assets from conceptual design, through design for manufacture and assembly (DfMA), installation on site, final commissioning, operation and maintenance and decommissioning at the end of the asset’s life. Our in-house software capability provides clients with the visualisation tools to precisely view and interrogate designs in a virtual world to minimise clashes, delays or abortive activities and to ensure that the delivered assets are acceptable to operators in the real world. Our BIM capability ensures our products and technologies create assets that are fit for the future and our virtual reality technology allows our teams and clients to fully immerse themselves in the design, optimisation and operation of our solution prior to manufacturing. Our asset optimisation capability helps clients get the best performance out of their assets, by integrating real time control and using data driven insight we can ensure the sustainability and efficiency of asset performance across its lifecycle. Our virtual environment shows the equipment in operation, with liquids moving and plant turning on/off according to the actual system control philosophy. This is an invaluable tool for HAZOPS, ALM and remote training of operators before the plant is constructed – reducing risk and time on site OFF-SITE MANUFACTURING & ASSEMBLY Te-Tech’s off-site manufacture and assembly capability provides standard products and engineered solutions to the water and wastewater sector, oil and gas and energy industries. Its primary focus is on solutions which are designed for manufacture and assembly DfMA; reducing on site construction time, reducing carbon footprint and minimising risk. At our Southampton based headquarters we have over 1000 sq. metres of internal manufacturing space as well as external areas for assembly and storage of larger materials and manufactured components. We design, manufacture and assemble to a range of different standards including CE/CA marking, EXC2 Structural Steel, BS and ASME welding procedures. Our strength within Te-Tech culminates in our integrated service, offering the complete process solution package, from digital design, automation and control through to off-site manufacture and on site assembly.

    Treatment Process Technologies
    Contractors
    Sidonwater S.L. logo

    Sidonwater S.L.

    Verified
    Spain1-50 employees
    Reverse Osmosis (RO)
    apac · europe · latam +2 more
    5 case studies·3 datasheets

    Sidon Water is a water technology company specialised in non-chemical water treatment and system optimisation. We develop and deploy advanced solutions that prevent and remove limescale, reduce fouling and corrosion, and improve the performance of cooling towers, industrial water systems, and reverse osmosis and desalination installations. Sidon Water works with industrial clients, commercial building owners, OEMs and EPC partners to deliver measurable improvements in energy efficiency, operational reliability and asset lifetime. Our activities cover the full cycle from analysis and pilot projects to system integration, commissioning and long-term performance optimisation.

    Electrochemical Technologies
    Process Water Treatment
    Wastewater Treatment
    +4 more
    agriculture
    manufacturing
    3rd Light Media Ltd logo

    3rd Light Media Ltd

    United Kingdom

    3rd Light Media provide technical documentation and design services for water and wastewater projects, both in the UK and internationally. We provide a range of documentation for projects, helping clients achieve their handover requirements and producing high quality documents which provide the end users with the information they need to operate and maintain the plants. We are a market leader in driving digital innovative solutions to our clients to ensure documentation is presented in new and dynamic ways, this includes development of web-based O&M manuals which can integrate with client I.T. systems such as SharePoint; Graphical design to enable data and documentation of assets on a site plan or P&ID to be available within just a few clicks of a button. Additionally, we have developed a QR coded asset tagging system and mobile App. Our services mean we can provide our clients with a single source for all handover documentation requirements. The services we can provide include: Operating and Maintenance Manuals (O&Ms) Site Operating Manual (SOM) Health & Safety Files Asset Data Registration Training Manuals Site Drawings (P&IDs, Process Flows, Site Layouts and Plans, GA’s, Single Line Diagrams and more) AutoCAD Drafting Services Additionally, we also provide a range of onsite services to further enhance being a one stop provider for all your project handover needs. Some of the onsite services we provide include: Asset Identification Tags (to meet all individual client specifications) Pipe Banding to BS1710 Site signage and labelling We also provide a range of design and pre-construction services, with experience when working with Tier 1 contractors at ECI / Outline Design stages of projects including: Functional Design Specifications Control Philosophies Factory Acceptance & Site Acceptance Tests for Software Testing Commissioning Plans and Sequencing Asset Condition Reports Verification Survey Works (Producing P&IDs, ICA and Electrical Design Proposals) We work as an integrated team with both contractors and clients to ensure all aspects of project handover are achieved to the highest standard. We are able to do this with our vast knowledge of individual water companies asset standards and specifications. We are also experienced in using portals such as TWEXnet, Asite, Aconex, Business Collaborator and Conject for uploading documents. Our team comprises of skilled and experienced site and process engineers with a vast knowledge of both water and wastewater treatment systems. Our team of engineers all hold EUSR Water Hygiene and CSCS cards as well as water company specific requirements such as the Thames Water Safety Passport. We also have an in-house graphic design team providing professionally drawn illustrations and drawings which are used within our documentation, helping to visualise written descriptions and processes. Our philosophy is to take the burden of producing documentation on projects away from our clients. Being skilled process engineers, we will visit sites to gather information and we work with your supply chain to coordinate the availability of all required documents and drawings, ensuring compliance with the end clients standards. We write all the technical content and detail to the highest standard, supported by expertly drawn diagrams and illustrations. Some of the water companies we have worked with include: Thames Water Affinity Water Yorkshire Water Southern Water Severn Trent South East Water United Utilities Welsh Water Bristol Water Essex & Suffolk Water Irish Water Haya Water We work both directly with water companies and Tier 1 and Tier 2 contractors. We work on projects of all sizes, from minor schemes to major £100+ million projects.

    Treatment Works Products/Services
    Accreditations
    ACWA Services Ltd logo

    ACWA Services Ltd

    United Kingdom

    ACWA is one of the leading UK players delivering innovative sustainable process solutions and technologies for both municipal and industrial clean water, wastewater and bio-solids treatment. ACWA design and execute resilient cost-effective technologies which address the needs of our clients and their regulatory drivers whilst helping to address climate change. ACWA provides expert technical products and services to the water, wastewater and industrial sectors. Our expertise combines practical experience with academic knowledge across a wide range of specialisms. These include: Design and build (digital delivery and off-site manufacture) Commissioning Project management We apply our extensive expertise to help our clients find the best sustainable, cost-effective solutions that meet all their requirements. We serve our wholesale water, wastewater and biosolids markets plus industrial food and beverage clients with their water needs. Our primary specialist areas are: Water treatment Wastewater treatment Industrial effluent Food and beverage TECHNOLOGIES In finding the best solutions we look at innovative ideas and turn them into reality producing some of the most sustainable technological solutions on the market. Our technologies include: Nitreat® Ion Exchange: This is a reversible nitrate removal process by which ions are interchanged between a solid and a liquid with no substantial structural changes in the solid. AquaPyr™ Tertiary Solids Removal Filter: This process is a simple filter that can also remove phosphorous using innovative cleaning technology producing low waste and using less power than other filters. Amtreat® High Rate Ammonia Removal: This process is a high-rate activated sludge process designed to treat wastewater streams and sludge liquors containing high concentrations of ammonia. DESIGN & BUILD ACWA’s in-house design capability is the architecture on which each project is meticulously built. The latest 3D models create precision imaging of all types of installations from a complex water or effluent treatment plan to a single piece of equipment to be integrated into an existing system. Through in-house engineers ACWA deliver a complete range of technical design and build expertise across projects and programmes of work that include, civil, mechanical, process and electrical, instrumentation and control and automation. PROJECT MANAGEMENT ACWA’s team of highly-experienced project managers, engineers and technicians work closely with clients and key project team members to deliver solutions in an efficient, timely, cost-effective and environmentally-responsible manner. Project management includes ensuring complete compliance with all relevant regulations, both European, national and where relevant, international, while at all times maintaining a clear focus on the project remit. Our responsibility is to ensure each project is a complete success, both for our client and for the environment. We actively identify and manage risks, issues, changes to requirements and quality standards to guarantee the best possible outcome. COMMISSIONING For hands-on commissioning services, ACWA is an industry leader, focussed on complex water and wastewater facilities for municipal and industrial clients. Commissioning is an essential step in project delivery. Without it we cannot have assurance of a quality outcome. Our in-house team provides comprehensive commissioning services getting involved at project start-up to take the project through planning design, construction and turnover, on time and on budget. ACWA’s multi-disciplined knowledge and expertise includes, system design, electrical testing, operations and maintenance (incl. training) as well as systems and process diagnostics, providing an authoritative and effective resource. WATER TREATMENT Our water expertise comprehensively covers the filtration spectrum from conventional strainers and filtration systems to the most advanced reverse osmosis and ion exchange technologies. Microfiltration Ultrafiltration Nanofiltration Reverse Osmosis / Desalination Ion Exchange Conventional Water Treatment Pressure Filters Gravity Filters Chemical Treatment Granular Activated Carbon WASTEWATER TREATMENT The days of wastewater disposal by methods that had no consideration for the implications to the environment are over. As water scarcity increases and the pressure to comply with ever increasing environmental legislation for effective effluent treatment intensifies, it has never been more important to choose the right wastewater partner who can provide a range of effective processes. ACWA can deliver those solutions. Preliminary Treatment Aerobic Biological Treatment Anaerobic Treatment Membrane Bio Reactor High-Rate Ammonia Removal (Amtreat®) Scrubber Effluent Treatment Plant Effluent Re-use Tertiary Treatment Sludge Treatment

    Designers
    Addicott Electrics Ltd logo

    Addicott Electrics Ltd

    United Kingdom

    Addicott Electrics specialise in the manufacture, installation and maintenance of Generator sets (up to 2500kw) and their associated control systems. Based at Teignmouth in Devon, the Company has over 30 years experience in the Generator Industry working with Public Utilities, Local Authorities, Hospitals, Police and Fire Services etc . AEL work with the client to ensure the generators selected is best suited to meet client’s own specification. All generators are constructed ‘in house’ and are of robust construction – and designed for manual, automatic or synchronised operation adapted to suit client own requirements: AEL offers a complete ‘turnkey’ package – supply of equipment, mechanical and electrical installation, commissioning and testing. All work is undertaken by Addicott’s directly employed skilled electrical and mechanical engineering team. Addicott Electrics is a full member of AMPS – the Association of Manufacturers of Power Generator sets. AEL also offer full after sales support and maintenance, refurbishment of existing plant and the hire of temporary generators.

    Networks - Water Supply
    Accreditations

    Water and Wastewater Operation and Maintenance Services: Contract Models, KPIs, and Asset Performance

    Operation and Maintenance (O&M) services for water and wastewater treatment facilities span routine operations (process control, chemical dosing, sampling, data recording), planned preventive maintenance (PPM: servicing pumps, valves, instruments, and rotating equipment on schedule), reactive maintenance (breakdown response, emergency repair), and performance management (KPI monitoring, regulatory compliance reporting, asset condition tracking). O&M contract models range from in-house operation (utility employs its own operations and maintenance staff) through managed service (external contractor provides staff and manages O&M under performance contract) to full design-build-operate-transfer (DBOT: contractor designs, builds, and operates for a concession period of 15 to 25 years before handback).

    PPM programmes for water treatment assets are structured around equipment criticality and manufacturer recommendations. Pumps: oil/grease lubrication quarterly, mechanical seal inspection 6-monthly, vibration analysis 6-monthly (predictive maintenance trigger: vibration velocity above 4.5 mm per s RMS per ISO 10816-3 Class III), impeller inspection and clearance check annually. Blowers and compressors: oil change 3 to 6-monthly, air filter replacement 3-monthly, belt tension check monthly (V-belt tension tolerance plus or minus 5 percent). UV systems: lamp intensity check weekly, sleeve cleaning monthly, lamp replacement at intensity below 70 percent of new-lamp value (typically 12 to 24-month lamp life). Membrane systems: CEB weekly, CIP quarterly, integrity testing daily or monthly per regulatory requirement.

    O&M contract performance is measured by KPIs aligned with regulatory compliance and customer service. Typical KPIs: treatment process compliance (effluent quality parameters within consent limits, target 99.5 percent compliance), uptime or availability (proportion of time the treatment plant is operational and producing treated water at rated capacity, target above 99 percent for critical infrastructure), response times (PPM completion within schedule: 95 percent on time; reactive maintenance response: critical faults within 2 hours, minor within 24 hours), and unit cost (cost per m3 of water treated, benchmarked against industry database). Performance-based contracts include KPI-linked payment (bonus for outperformance, financial deduction for underperformance), creating incentive alignment between operator and asset owner.

    Frequently Asked Questions

    What does a water treatment O&M contract typically include?

    A comprehensive water treatment O&M contract covers: (1) Routine operations - process monitoring and control (SCADA observation, manual readings every 4 to 8 hours, process adjustments), chemical dosing management (ordering, receiving, dosing pump calibration and setpoint management), statutory sampling and analysis (daily, weekly, monthly per licence and consent conditions); (2) Planned preventive maintenance - all scheduled maintenance activities per PPM schedule (pump services, filter backwashes, instrument calibrations, UV lamp replacements); (3) Reactive maintenance - attending and resolving breakdowns, fault investigations, emergency call-out 24/7; (4) Regulatory compliance management - record keeping, licence reporting, Drinking Water Inspectorate (DWI) or Environment Agency submissions, corrective action when parameters approach limits; (5) Asset management inputs - condition assessments, capex recommendations, lifecycle planning support. Contract duration: 3 to 5 years for managed service; 15 to 25 years for DBO/DBOT.

    What is the difference between PPM and reactive maintenance?

    Planned Preventive Maintenance (PPM) is maintenance carried out on a time-based or condition-based schedule to prevent equipment failure before it occurs: oil changes, seal replacements, filter cleaning, calibration checks, and vibration monitoring conducted at fixed intervals (daily, weekly, monthly, annually) regardless of whether the equipment shows signs of failure. The cost of PPM is predictable and budgeted. Reactive maintenance (corrective maintenance, breakdown maintenance) is carried out in response to an equipment failure or fault: emergency pump repair after bearing failure, UV lamp replacement after unit alarm, valve repair after gland leak. Reactive maintenance costs are unpredictable and often significantly higher than PPM due to emergency contractor call-out rates, expedited spare parts, and production downtime costs. Industry target: PPM should represent 80 percent or more of total maintenance hours; reactive below 20 percent. A well-executed PPM programme reduces reactive maintenance frequency, overall maintenance cost, and unplanned downtime.

    How is O&M cost benchmarked for water utilities?

    O&M cost benchmarking uses: (1) Unit cost metrics - cost per m3 of water produced ($0.15 to $0.60 per m3 for conventional drinking water treatment; $0.30 to $1.20 per m3 for advanced treatment including membranes and UV); cost per population equivalent served per year ($50 to $150 per PE per year for WWTP O&M); (2) Industry database benchmarks - Ofwat cost benchmarking model (UK) uses totex (total expenditure) benchmarking across all 17 regulated companies to identify relative efficiency; NACWA utility benchmarking (US) for wastewater; AWWA benchmarking programme for water; (3) Process-specific benchmarks - aeration energy 0.3 to 0.6 kWh per kg BOD removed (activated sludge); chemical cost $0.05 to $0.20 per m3 for coagulation (surface water); UV energy 0.02 to 0.05 kWh per m3 at 40 mJ per cm2; (4) Labour productivity - staff hours per ML treated per day; automation and remote monitoring reduce staffing requirements by 20 to 40 percent versus manually operated plants.

    What qualifications are required to operate a water treatment plant?

    Operator qualification requirements vary by jurisdiction and plant type. UK: Water Industry Registration Scheme (WIRS) - competency-based registration for drinking water treatment (Level 3 to Level 6 WIRS qualification depending on plant complexity: Level 3 for simple groundwater, Level 6 for multi-stage surface water treatment including membranes and advanced oxidation). Environment Agency requires qualified operators for WWTP discharge permits. US EPA: state-issued drinking water and wastewater treatment operator certification required in all 50 states; grades T1 to T4 for treatment, D1 to D4 for distribution (AWWA certification framework); minimum grade required determined by plant complexity and population served. EU: no harmonised EU requirement; member states set national qualification requirements. Operator training programmes: CIWEM (UK), WaterNZ, AWWA, and state water environment associations provide technical training courses and competency assessments.

    Case Study·Industrial water utility, multi-site O&M contract, Yorkshire
    Challenge

    A chemicals group operating five process water treatment plants across two Yorkshire sites was managing O&M in-house with a team that had accumulated significant tribal knowledge but no documented PPM programme. A CQC audit found 34 percent of planned maintenance overdue, three critical chemical dosing pumps without service records, and one UV system operating below 70 percent lamp intensity without an alarm.

    Approach

    An O&M managed service contract was awarded following a competitive tender. The incoming operator completed an asset condition survey across all five plants within 60 days, loaded all assets into IBM Maximo CMMS, and built a 12-month PPM schedule aligned with manufacturer intervals and BS EN 13306. Critical spare parts were identified and minimum stock levels agreed with the client. A SCADA alarm rationalisation exercise reduced nuisance alarms from 240 per month to 38.

    Outcome

    PPM completion rate reached 97 percent within six months. The three critical dosing pumps were serviced and calibrated; UV lamps were replaced and intensity verified at 100 percent. Total reactive maintenance incidents fell by 58 percent year on year. The client reported zero regulatory compliance failures in the first 24 months of the contract.

    Questions to Ask Shortlisted Providers

    1. 1

      What is the scope boundary between O&M (revenue spend) and capital maintenance (capex), and who authorises capex works?

      An ambiguous capex/opex boundary creates disputes when major repairs are needed; the contract must define decision rights and approval thresholds clearly.

    2. 2

      What CMMS platform will be used and who owns the asset data at contract end?

      Asset data and maintenance history have long-term value; the client should retain data ownership and confirm export rights in the contract.

    3. 3

      What KPIs apply and what are the financial consequences of underperformance against each?

      KPI-linked payment structures vary widely; understanding which KPIs carry financial penalties versus warnings is essential for pricing risk.

    4. 4

      What is the minimum response time for a critical process failure and what is the out-of-hours call-out protocol?

      24/7 cover for critical water treatment assets usually requires a separate standby rota and remote monitoring; the cost of this cover must be explicit in the contract price.

    5. 5

      What regulatory submissions is the O&M operator responsible for and who carries liability for a compliance failure?

      DWI and EA submissions carry legal liability; the contract must clearly allocate responsibility between operator and asset owner for each compliance obligation.

    What Drives Cost in This Category

    Number of assets and plant complexity

    PPM labour hours scale directly with asset count and complexity; a five-plant contract with 200 major assets requires 3 to 5 full-time equivalent operators, dominating the fixed contract cost.

    24/7 standby and response requirement

    Out-of-hours standby cover for critical infrastructure adds 20 to 40 percent to base O&M cost; response time commitments of 2 hours or less require dedicated local standby personnel.

    Chemical supply and management

    Chemical procurement and dosing management can represent 15 to 25 percent of total O&M cost; consolidated purchasing through the operator may reduce unit costs by 5 to 15 percent versus client self-supply.

    Regulatory reporting and laboratory analysis

    Statutory sampling, accredited laboratory analysis, and DWI/EA reporting add 30,000 to 120,000 GBP per year depending on permit complexity and sample frequency.

    Key Regulations & Standards

    Water Industry Registration Scheme (WIRS)

    Competency-based operator registration for drinking water treatment; Level 3 to Level 6 qualifications required depending on plant complexity; all operators at regulated water company sites must hold appropriate WIRS registration.

    DWI Regulation 28 (WS(WQ)R 2016)

    Requires water companies to notify DWI of failures against prescribed concentrations or values; the O&M operator must have documented escalation procedures to trigger notification within the required timescales.

    EA Environmental Permit (Operator Competency)

    Environmental permits require the operator of a regulated site to demonstrate sufficient competency; the O&M contractor assumes the operator role and must meet the technical competency conditions of the permit.

    BS EN 13306:2017 (Maintenance Terminology)

    Provides standardised definitions for PPM, corrective maintenance, condition-based maintenance, and reliability-centred maintenance used in O&M contracts; alignment with this standard avoids scope disputes.