Get your water main connected

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Detailed information outlining the process of laying a new water main and connecting new water services.

Please note that if you’re connecting a non-household property, you’ll need to appoint a retailer. For more information, please see our News and Improvements section

If you have planning permission, you can apply here for a new water main and service connections.

Apply for a new water main

You’ll need to provide the following information with the application form:

  • A full soil report with chemical analysis
  • Details of any environmental issues
  • Details of any sustainable drainage systems (SuDS)
  • A site layout plan indicating plot numbers and their entry points for the new supplies. The plan should be a CAD drawing in ‘dwg’ format.
  • A phasing or build programme for the development, or occupancy rate.

If you've not yet received planning permission and you’re looking for an estimated cost of installing a new water main and service connections, you can apply for a budget estimate.

Please note, if you're connecting a non-household property, you'll need to appoint a retailer for that site. More information can be found here.

We’ll carry out a site survey to ensure our design is feasible and identify traffic management needs.

You'll receive a quote with costs to carry out the work ourselves and provide an estimated cost for self-lay organisations.

Scaled drawings indicating the layout of the new mains and service connections will be attached.

If you have any queries about the quote, contact us.

Sign and return your chosen offer by email to Developer Services. You can pay the full amount on your quote using one of the following methods

Online: Pay with your credit or debit card at thameswater.co.uk/payds. You’ll need to quote the reference number starting ‘DS’ from your quote.

Pay now

By phone: Phone us on 0800 009 3921 to pay by card. Please note that we don’t accept American Express or Solo cards.

By post: Make cheques payable to Thames Water Utilities Ltd and write the reference number starting ‘DS’ on the back. Send to:

Thames Water

Developer Services

Clearwater Court

Vastern Road

Reading

Berkshire

RG1 8DB

By BACS or CHAPS payment: Pay to the Thames Water Utilities Ltd account, quoting the reference number starting ‘DS’ and using the following information:

Sort Code: 60-00-01

Bank Account: 90478703

For international payments, the IBAN number is GB96NWBK60000190478703

For CHAPS payments, the BIC number is NWBKGB2L

Payment on connection (subject to provision of security): You may choose to pay in arrears if you provide security equal to the expected charges for the works (including an inflation allowance). If you choose this option, you need to make this clear when you accept our quote and do so within the validity period of that quote. The security we accept is:

  • A bank guarantee in our favour issued by a bank or building society registered and operating in the United Kingdom, appearing in the list of banks or building societies as compiled by the Bank of England and having an investment grade credit rating;
  • A letter of credit in our favour issued by a bank or building society registered and operating in the United Kingdom, appearing in the list of banks or building societies as compiled by the Bank of England and having an investment grade credit rating;
  • An on demand bond or guarantee issued in our favour by a third party having an investment grade credit rating;
  • A cash deposit.

We will provide the required value and wording for each of the security documents on request. If you choose to pay in arrears, we will calculate charges using the rates published and in effect when the works are completed, which may be different to those in your quote.

If you wish to move ahead with this option, please contact us to discuss.

Once you’ve accepted the offer, we’ll contact you to arrange a commencement meeting.

At this meeting we’ll confirm the scope of works, lead times, on site facilities and any traffic management requirements.

We'll need to talk to the local authority and other bodies responsible for roads and traffic e.g. Transport for London and bus companies.

In line with your phasing requirements we'll plan to construct the water main within 90 days from acceptance of quote.

New water services

After the new water main has been installed, you'll need to request the service connections. Please see below for a step-by-step guide.

Once the main has been commissioned we can connect the service connections.

You’ll need to contact us to request a quotation for this work, by calling 0800 009 3921. We’ll require details of the following:

  • Plot numbers (as per our drawing)
  • Number of services required
  • Schematics (for communal supplies)
  • Landlord supplies including bin stores

     

We’ll review your requirements and produce a quote.

If you’ve any queries about your quote, please call us on 0800 009 3921. Otherwise you can pay the full amount on your quote using one of the following methods.

Online: Pay with your credit or debit card at thameswater.co.uk/payds. You’ll need to quote the reference number starting ‘DS’ from your quote.

Pay now

By phone: Phone us on 0800 009 3921 to pay by card. Please note that we don’t accept American Express or Solo cards.

By post: Make cheques payable to Thames Water Utilities Ltd and write the reference number starting ‘DS’ on the back. Send to:

  •          Thames Water
  •          Developer Services
  •          Clearwater Court
  •          Vastern Road
  •          Reading
  •          Berkshire
  •          RG1 8DB

By BACS or CHAPS payment: Pay to the Thames Water Utilities Ltd account, quoting the reference number starting ‘DS’ and using the following information:

                 Sort Code: 60-00-01

                 Bank Account: 90478703

                 For international payments, the IBAN number is GB96NWBK60000190478703

                 For CHAPS payments, the BIC number is NWBKGB2L

You'll need to lay the new supply pipe from the internal stop valve to the agreed point of entry. We’ll then need to carry out an inspection.

If you've not used an approved plumber, you can book your inspection by contacting us. We'll normally arrange a date and carry out the inspection within seven days of you contacting us.

You’ll need to be present for the inspection, and will need to have left your trench open, or ‘spy holes’ no more than two metres apart. The inspection covers the pipework from the property boundary to the inside stop valve, which isolates the entire property.

The process normally takes at least half an hour or longer if there is more than one connection to inspect.

We’ll tell you immediately whether you’ve passed the inspection. If you’ve failed, we’ll give you a non-compliance form showing the areas that need to be rectified. You’ll then need to contact us again to arrange another inspection.

Once full payment of the quotation has been made and the pipework has passed our inspection, we’ll start planning a connection date.

This typically takes up to three months because we often need to get permission before carrying out work in a road or footpath, or on privately-owned land.

The connection is likely to take up to four days to complete.

You need to notify us when meters have been installed, as well as provide the postal addresses allocated to each plot and the TAPS5 certification. We'll then arrange to visit the site to record the details of each meter and check they’ve been fitted correctly - we’ll use this information to set up new billing accounts for the occupants.