Water Technology Leasing & Rental Companies
Short- and long-term rental of RO, filtration, and wastewater units for outages, pilots, and temporary demand.
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Gi Aqua , Water as a Service
VerifiedSaudi Arabia · 51-200 employees
GI WAAS delivers cutting-edge water and wastewater solutions using advanced nanotechnology and zero total discharge solution sets industry standards. Our mission is to provide smart, sustainable, and decentralized treatment systems. We are committed to circular economy principles and reducing environmental impact. Our holistic approach provides comprehensive, tailor-made solutions that are designed to meet the specific needs of each client
Buyer's guide
The buyer's guide to water technology leasing & rental
Water Treatment Rental and Mobile Services: Emergency Supply, Bypass, and Temporary Plant
Water treatment rental and mobile water services provide temporary water treatment capacity to water utilities, industrial facilities, and construction sites using trailer-mounted or containerised plant that can be deployed, commissioned, and operational within 24 to 72 hours. Applications: emergency response (treatment works failure, flood event contamination of source, infrastructure damage requiring bypass); planned maintenance bypass (treating water while permanent plant is taken off-line for maintenance or refurbishment); development and commissioning support (providing water supply while new permanent plant is being constructed); industrial water supply (temporary process water supply during planned or unplanned shutdowns); construction (site water supply, concrete batching, dust suppression).
Key mobile treatment technologies: ultrafiltration skids (containerised UF, 200 to 5,000 m3/day, trailer-mounted); RO systems (BWRO or SWRO, 50 to 2,000 m3/day, containerised); coagulation-filtration-disinfection package plants; ion exchange softeners and deionisers (trailer-mounted, 10 to 500 m3/h); mobile activated carbon systems (GAC vessels for taste/odour or micropollutant control); UV disinfection units. Rental period: typically monthly or weekly hire, with 1 to 5 year contracts for planned maintenance programmes.
Mobile water services for water utilities: a small number of established national providers operate mobile water fleets in the UK. DWI requirements for emergency/temporary drinking water supply: mobile plant used for drinking water production must use DWI/WRAS-approved materials and DWI-approved treatment processes; operator must notify DWI when mobile plant is used for regulatory supply; performance monitoring (turbidity, chlorine, microbiological sampling) continues at same frequency as permanent works. EA permit: if mobile plant discharges wash water, backwash, or concentrate to watercourse, Environmental Permit required (EA fast-track 'temporary permit' available for genuine emergencies). Typical rental rates: RO unit 500 m3/day: GBP 8,000 to 15,000 per month plus consumables (membranes, chemicals, energy); UF unit 1,000 m3/day: GBP 5,000 to 12,000 per month; IX softener 100 m3/h: GBP 3,000 to 8,000 per month. Mobilisation cost: typically GBP 3,000 to 15,000 for delivery, installation, and commissioning (varies with distance and complexity).
Industrial water treatment rental: power stations, refineries, pharmaceutical plants, and semiconductor fabs use rental treatment plant during: (1) Capital project construction (pre-commissioning water supply for hydrostatic testing, flushing); (2) Planned turnaround or shutdown (provide equivalent water quality to offline treatment plant); (3) Emergency: unexpected treatment plant failure. Industrial rental specifications: pharmaceutical: USP Purified Water or WFI to Ph. Eur. standard; rental supplier provides equipment with appropriate GAMP/GMP documentation; 21 CFR Part 11 compliant data logging; IQ/OQ/PQ validation support.
Power station demineralised water: conductivity less than 0.1 uS/cm; SiO2 less than 5 ppb; mobile IX demineraliser or RO+EDI unit. Semiconductor: UPW at 18.2 MOhm.cm resistivity; specialised mobile units with PVDF piping and online resistivity monitoring. Construction site water supply: mobile RO or UF units treating bore water, surface water, or mains for concrete batching (water quality to BS EN 1008 - free of organic material, Cl- less than 500 mg/L, SO4 less than 2,000 mg/L, alkalis adjusted for concrete mix design).
Frequently asked questions
How quickly can mobile water treatment be deployed?
Mobile water treatment deployment timelines: Emergency response (unplanned): standard rental equipment on standby: mobilisation within 4 to 8 hours of instruction for simple skid units (portable UV disinfection, small RO, small UF); delivery, setup, and commissioning: 24 to 48 hours for trailer-mounted plant up to 500 m3/day; 48 to 72 hours for containerised plant 500 to 5,000 m3/day. Planned deployment (scheduled maintenance): pre-survey site visit; pipe connections and electrical supply specified; rental equipment pre-configured for site; mobilisation 1 to 2 weeks before outage date; commissioning and testing 1 to 3 days on site before taking permanent plant off-line. DWI notification: for drinking water applications, DWI requires advance notification (even in emergencies, notify as soon as practical); utility emergency contact at DWI is available 24 hours for critical supply events. Major rental providers (UK) operate regional depots across the country. Bottleneck factors: custom piping connections for non-standard site inlets/outlets; electrical power supply capacity (mobile RO 500 m3/day requires approximately 50 kW 3-phase supply); EA temporary permit for discharge if required (fast-track 5-day process); chemical supply (NaOCl, antiscalant, coagulant) for extended deployment. For critical infrastructure, rental providers maintain 'emergency response' depots with pre-configured units held on standby.
What are the costs of renting water treatment equipment?
UK rental cost ranges (2024 market rates, excludes VAT): Ultrafiltration unit (500 m3/day): GBP 4,000 to 8,000 per month + energy + consumables. RO unit BWRO (200 m3/day): GBP 5,000 to 10,000 per month + membranes + chemicals + energy. RO SWRO (200 m3/day): GBP 8,000 to 15,000 per month + energy + membranes. Package coagulation-filtration-UV (500 m3/day): GBP 6,000 to 12,000 per month. Mobile IX softener (50 m3/h): GBP 3,000 to 6,000 per month. Mobile demineraliser (RO+IX, conductivity less than 0.1 uS/cm, 20 m3/h): GBP 4,000 to 8,000 per month. Mobile UV unit (500 m3/h, 40 mJ/cm2): GBP 1,500 to 4,000 per month. Mobilisation/demobilisation: GBP 3,000 to 15,000 per deployment (distance-dependent). Operator support: on-site operator (8-hour day shifts): GBP 300 to 500 per day additional if required. Consumables (membranes, resin, chemicals, filter media): typically 20 to 40 percent of equipment hire cost per month. Energy: rental equipment typically consumes 0.2 to 1.0 kWh/m3 product; at GBP 0.30/kWh: add GBP 0.06 to 0.30/m3. Long-term rental discount: 3-month rental typically 10 to 15 percent below monthly rate; 12-month rental 15 to 25 percent below monthly rate. For planned maintenance programmes (e.g. annual 2-week outage): negotiated fixed-price contract with mobilisation, hire, demobilisation, and operator support bundled.
Can rental water treatment meet drinking water standards?
Yes, rental water treatment can and does meet drinking water quality standards for temporary public supply. Requirements: (1) Equipment compliance: all materials contacting water must be DWI/WRAS-approved (BS 6920 extraction test compliant); treatment processes must be DWI-approved for drinking water production; rental equipment must have appropriate approval documentation; (2) Process validation: mobile UV units must be validated to DVGW W 294 or EPA UVDGM at the site water UVT and flow rate; mobile RO/UF must be performance verified at site conditions; (3) DWI notification: water companies must notify DWI when using temporary plant for drinking water production; DWI inspector may inspect plant; performance data reported in annual return; (4) Monitoring: same monitoring frequency as permanent plant applies; turbidity, free chlorine, microbiological sampling maintained; (5) Operator competence: mobile plant operators must be trained and competent; DWI may require evidence of operator qualification (Water Management Society Certificate, CIWEM membership, or equivalent). UK examples: Thames Water and Anglian Water routinely use mobile RO, UF, and package plant from the established providers during planned maintenance outages; temporary supply events managed through Drinking Water Safety Plan (DWSP) incident protocols. Emergency supply: DWI's Chief Inspector publishes guidance on temporary supply measures during supply interruptions; bottled water, bowsers (water tankers), or temporary mobile plant are the three options for maintaining supply in supply zone failures.
What types of industrial water treatment can be rented?
Industrial water treatment rental covers the full range of water quality requirements: (1) Boiler makeup water: mobile demineraliser (RO + 2-bed IX or mixed bed IX; conductivity less than 0.1 uS/cm; SiO2 less than 10 ppb); common for power station shutdown maintenance; 5 to 50 m3/h flow rate; containerised trailer-mounted; (2) Cooling water makeup: mobile softener (IX resin, Na+ form); hardness less than 10 mg/L CaCO3 product; 50 to 500 m3/h; suitable for cooling tower makeup during plant softener maintenance; (3) Process water for food/beverage: reverse osmosis mobile unit; meets BS EN 1935/2004 (materials in contact with food); WRAS-approved; 50 to 500 m3/day; (4) Pharmaceutical purified water: USP-compliant mobile RO + CDI unit; GAMP-documented; 21 CFR Part 11 data logger; 2 to 20 m3/h; GMP cleaning and sanitisation capability; (5) Industrial effluent treatment: mobile DAF (dissolved air flotation) for SS removal; mobile biological treatment (containerised SBR or RBC) for BOD reduction; mobile physico-chemical treatment (coagulation + sedimentation + pH adjustment) for trade effluent consent compliance during plant failure; (6) Dewatering and groundwater treatment: trailer-mounted activated carbon (GAC) filters for contaminated groundwater (BTEX, chlorinated solvents, PFAS) during construction or remediation; (7) Concrete batching: BS EN 1008-compliant mobile water treatment for construction projects in remote locations.
Illustrative scenario · Municipal water supply
A composite drawn from typical projects in this category, not a single client engagement. Figures are indicative.
- Challenge
- A water company in Yorkshire needed to take its 12,000 m3/day upland surface-water treatment works off-line for 18 days to replace a corroded primary tank floor and refurbish four rapid gravity filters. The works served 68,000 people with no alternative supply route; a complete shutdown was not feasible.
- Approach
- The mobile water services provider deployed two trailer-mounted 6,000 m3/day ultrafiltration skids (PVDF hollow fibre) fed directly from the raw water main, with a DWI-notified temporary chlorination and pH-correction skid. The units were commissioned in 36 hours. Online turbidity, chlorine, and pH instruments reported directly to the water company SCADA system. DWI was notified of the temporary supply arrangement the same day.
- Outcome
- The works maintained continuous supply to all customers at normal pressure throughout the 18-day shutdown; all DWI compliance samples passed; the refurbishment was completed on schedule and the rental plant demobilised within two days of the permanent works returning to service. Total rental and mobilisation cost was GBP 285,000 against a lost-supply contingency budget of GBP 420,000.
Questions to ask shortlisted providers
5
- 01
Are all wetted materials in your rental units WRAS-approved and DWI-listed for drinking water contact?
For any potable application, non-WRAS materials can create a DWI compliance breach; confirmation before deployment avoids a last-minute DWI notification problem.
- 02
What is the mobilisation timeline from instruction to first water, and what site preparation is required from us?
Emergency situations are time-critical; understanding power supply, inlet pipe size, and on-site chemical storage needs prevents delays on arrival.
- 03
What performance guarantees are included in the hire contract and what are the penalty provisions for off-spec water?
Rental rates alone do not protect you if the unit produces water outside consent limits; clear liability provisions are essential.
- 04
How is the rental unit integrated with our existing SCADA and alarm systems?
A rental unit operating as an island without telemetry integration creates a monitoring gap; remote alarm connectivity must be specified upfront.
- 05
What is your EA temporary permit process and how quickly can you obtain one for our specific discharge scenario?
If the rental unit produces a waste stream (backwash, concentrate) that requires an Environmental Permit, the 5-day fast-track EA process must start before deployment.
What drives cost in this category
4
- Unit daily hire rate and minimum hire period
- Most rental providers charge by the month with a minimum 4-week hire; for a 10-day planned outage, a full month is typically billed, so total cost is 3 to 4 times the proportional daily rate.
- Mobilisation distance and specialist transport
- Oversized trailer-mounted units require abnormal load permits and police escort for road widths below 3 m; transport costs from depot to site range from GBP 2,000 to 12,000 depending on distance and route.
- On-site operator support
- DWI-notified temporary drinking water plant typically requires an on-site operator; day-shift operators cost GBP 350 to 500 per day; 24/7 cover can add GBP 12,000 to 18,000 for a two-week deployment.
- Chemical and membrane consumables
- Rental contracts often exclude consumables; for an RO unit treating hard groundwater, antiscalant and CIP chemicals can add GBP 1,500 to 4,000 per month; membrane replacement on high-fouling source water can add GBP 8,000 to 20,000 per module set.
Key regulations and standards
4
- DWI Notification for Temporary Supply
- Water companies must notify the DWI's Chief Inspector when using temporary mobile plant for drinking water supply, even in emergencies; DWI's emergency contact is available 24 hours and expects notification as soon as practicable; the notification must include process description, volumes, and monitoring arrangements.
- WS(WQ)R 2016 Monitoring Continuity
- Monitoring frequency for turbidity, free chlorine, pH, and microbiological sampling does not reduce when mobile plant is in use; the water company remains responsible for maintaining the regulatory monitoring programme throughout the temporary supply period.
- DVGW W 294 / EPA UVDGM for Temporary UV
- If the temporary plant includes UV disinfection for Cryptosporidium credit, the UV reactor must be validated to DVGW W 294 or equivalent at the site-specific UV transmittance and flow rate before DWI will accept it as a treatment barrier.
- EA Environmental Permit (Fast-Track Temporary)
- If the temporary unit discharges backwash or RO concentrate to a watercourse, an EA Environmental Permit is required; EA operates a 5-day fast-track process for genuine emergencies, but must be contacted on day one of deployment planning.