Serving parts of North West London and the Home Counties.

Water Mains Diversion



Water mains diversion application process infographic


  1. Submit your C4 request, including a location map showing the required diversion, cross level sections and co-ordinates of the diversion.

  2. Within 5 calendar days of receiving your application we will confirm in writing that we have everything needed to answer your enquiry.

  3. We will review the information and prepare the draft diversion and draft estimate.

  4. We will discuss with you the scope of work and the final estimate.

  5. We will send the final design and cost


Payment and Installation

Payment and Installation process infographic


  1. To accept the C4 request either send in your payment or an order for the work.

  2. We create the construction pack.

  3. We deliver the diversion.


Apply for a Mains Diversion / Extension >>