Projects &amp; case studies

Walton, Surrey·Repair & maintenance

350mm GRP Main Repair, Walton

350mm repair completed on a GRP water main in Walton. Overgrowth cleared and concrete-encased main excavated before the damaged section was cut out and replaced with a new PE pipe section using flanged mechanical couplings.

Hayes, Greater London·Repair & maintenance

Cross Connection on Park Road, Hayes: 3 Inch to 6 Inch Network Reinforcement

Project overviewCross connection between a 3 inch and 6 inch water main on Park Road, Hayes, for Affinity Water network reinforcement. Delivered live by Ian and DJ, with the works used as the site audit for their EUSR NCO (Water) Network Construction Operations registration. Audit carried out by Jo Parker.

Groundworks

Denham, Buckinghamshire·Groundworks

Ekki Bog Mat Access Road Replacement at Northmoor WTW

Replacement of the Ekki hardwood bog mat access road at Northmoor Water Treatment Works in Denham, for Affinity Water. Specialist estates civils work at an 18 ML/D strategic treatment site, delivered by Joss, Tilly, Ryan, Emmanuel and Iulian under observation from the client's senior projects managers. Completed September 2025.

Ascot, Berkshire·Repair & maintenance

Cross Connection Install in Ascot for Affinity Water

Cross connection install on an Affinity Water network in Ascot, Berkshire. Under-pressure drilling and pipework fabrication to tie two sections of distribution main together, completed live without service interruption. Delivered by Lukos and Kris.

Walton-on-Thames, KT12·Repair & maintenance

Pressure Management Scheme: PRV Install on Live Main

Complete pressure management installation for Affinity Water. Live main exposed, under-pressure drilled, line stopped for isolation, bypass pipework installed, pressure reducing valve (PRV) commissioned, and full site reinstatement. No service interruption throughout. Completed by Mark and Ciaran.

Watford, Hertfordshire·Repair & maintenance

Washout Installs on 9 Inch Main, Watford

Two under-pressure drillings on a 9 inch water main in Watford for Affinity Water, installing two washout points in the footway to enable future network flushing operations without road works. Carried out live - no customer impact. Completed by Lukos and Kris.