Our Solutions

Our equipment fleet and technical capability cover the full range of temporary potable water infrastructure requirements — from straightforward storage through to complex multi-stage contact and disinfection systems.

All solutions are designed, supplied, and maintained by Butek-Portstoken. Every water-contact component is Regulation 31 compliant and the build package pre-agreed with water quality stakeholders.

Large-Scale Temporary Water Storage

Our primary deployment is large-scale temporary potable water storage: bolted galvanised steel tanks from 25m³ to 1.5ML as single units, and larger in arrayed installations. Tanks are combined with Reg 31 approved liner systems, designed for rapid deployment and demobilisation without permanent civil engineering works.

•         Suitable for planned maintenance windows, resilience support, temporary network storage points and reservoir refurbishment programmes

•         Fully modular — can be man-carried and assembled on access-constrained sites

•         Build options include high and low access hatches, ventilation, level monitoring, ladders, platforms, and fully configurable inlet and outlet arrangements

•         Concrete-free foundation systems in the great majority of cases

•         Optional pre-installed enabling infrastructure for future rapid redeployment

•         All wetted and non-wetted areas Reg 31 compliant — each build fully documented

Reusable Infrastructure Philosophy

Butek-Portstoken systems are designed as reusable operational infrastructure rather than one-off construction projects.

Unlike conventional temporary works that can evolve into permanent civil assets, our systems are engineered to be recovered, refurbished, and redeployed repeatedly across multiple operational cycles. This approach provides:

•         Lower embodied carbon across the operational life of the fleet

•         Reduced permanent land take and site impact

•         Faster deployment compared with traditional construction approaches

•         Removal of stranded temporary assets at project completion

•         Greater flexibility for AMP8 maintenance and resilience programmes

Where future operational need is foreseeable, selected enabling works such as ground rings or tie-in points can remain in situ to support future rapid deployment while maintaining a low visual and environmental footprint.

Liner Systems

The liner is central to potable water compliance. Butek Portstoken liner systems are manufactured from high-quality, Regulation 31 approved membranes, IFU aligned for contact with drinking water.

Liners are custom-fabricated to each tank geometry in the factory, inspected, and tested before despatch. During the final stages of installation, they are inspected and retested before being disinfected prior to commissioning.

This factory-to-commissioning chain of control gives water companies and the DWI confidence in the integrity of every liner we deploy.

Contact Tank Arrays

Where higher levels of disinfection performance are required — or where site constraints limit the effectiveness of a single tank — multiple tanks can be configured in series to form a staged contact system.

Water passes sequentially through each stage, designed to promote controlled flow from low to high level. This approach reduces short-circuiting and improves effective contact time (T₁₀), enabling a greater proportion of the total volume to contribute to disinfection performance and achieve the required Ct values.

A contact tank arrangement is a technically more sophisticated setup than straightforward storage, and is designed as such from the outset — not retrofitted. Each installation accounts for:

•         Required Ct performance

•         Available footprint and site levels

•         Flow rates and operational constraints

•         Integration with existing assets

A range of inlet and outlet configurations can be deployed — including calmed inlets and staged transfer arrangements — to optimise hydraulic efficiency without permanent civil structures.

DWI compliance:  Contact tank arrays are designed to meet the same security obligations as permanent assets. A site-specific Security Risk Assessment is carried out on every contact tank deployment, with access controls and protection measures appropriate to the asset's role in the supply chain.

Temporary Booster Pumping & Network Support

In most cases, top water levels can be matched across available tank capacities to avoid the need for boosting. Where network pressure or topography requires it, Butek Portstoken can supply and commission containerised, skid-mounted booster pump stations sized to the specific hydraulic requirements of each project. All pump sets include instrumentation, telemetry, and remote monitoring, and are fully weatherproofed for extended site deployment.

Telemetry & Remote Monitoring

All installations can be equipped with real-time level telemetry, pressure monitoring, and data logging, configured to transmit to client SCADA systems or to Butek Portstoken's own monitoring platform. Alarm thresholds, high/low level alerts, and data export are all configurable to client requirements.

HPV Disinfection (Hydrogen Peroxide Vapour)

HPV is our preferred disinfection method. It is a dry H₂O₂ fogging process that achieves a validated 6-log reduction across all internal surfaces — liner, pipework internals, roof structure, and any equipment within the tank.

Unlike wet chlorination, HPV leaves no residual chemical, eliminating the need to flush, neutralise, or dispose of chlorinated water. Once the fogging cycle and required contact time are complete, the tank can be filled directly. HPV is also effective against cryptosporidium and biofilms.

Butek Portstoken maintains detailed records of each cycle — concentration, contact time, temperature, and surface coverage — providing a complete audit trail for DWI and client QA purposes.

HPV advantage:  No chlorinated water to flush or dispose of. Faster commissioning. Effective against cryptosporidium and biofilms. Complete validated audit trail. Suitable for sensitive or constrained sites.

Wet Chlorination

Where site conditions or water company protocols require it, Butek Portstoken commissions tanks using conventional wet chlorination in accordance with the relevant water company's standard. All chlorination works are carried out by competent operatives with appropriate chemical handling certification. Dechlorination of flush water is managed to prevent any discharge to controlled waters.

Sampling Facilities

All tanks are supplied with compliant sample points and secure kiosks with flame-able taps, providing safe, documented access for water quality testing throughout the operational period.