Serving parts of North West London and the Home Counties.

New Water Mains




  1. Submit your Section 41 application for a new or extended water main

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

  3. The design works are carried out over a period of 28 calendar or 42 calendar days if your scheme is classed as extraordinary (we will confirm this in writing).

  4. 28 calendar or 42 calendar days after we have received the full and complete information you will receive your cost advice.

  5. You decide if and how you wish to proceed with the New Mains Requisition (Affinity Water Installation or Self Lay)


Payment and Installation of new main by Affinity Water


  1. Complete and send us your Offer Letter and Legal Agreement by post or email, and make payment.

  2. After your letter, agreement and payment is received, we will programme your works to be completed within 90 calendar days of payment or later if requested. We shall contact you to discuss the installation date.

  3. We arrange a site pre start meeting where we will discuss our requirements and confirm the installation date.

  4. Make your site ready for a check

  5. Two days before the install date of the water main, we will inspect your site to ensure it is ready for our works.

  6. We will attend the site and carry out our main laying works.


Call off Process


  1. Send your payment for the appropriate plots against your service cost.

  2. Contact our team to call off the required plots.

  3. Two days before the install date we will inspect your site to ensure it is ready for our works.

  4. We will attend site and carry out the connections.


Apply for a New Water Mains >>


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