Frequently asked questions: Approved plumbers scheme

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On this page you can read answers to the most frequently asked questions about our approved plumbers scheme.

  • Please note, when we compiled the information on our approved plumbers search, the companies listed employed qualified named plumbers or underground workers, who are familiar with the requirements of the Water Regulations.
  • Your contract will be with the approved plumber / underground worker and not Thames Water, so we cannot give assurance of their availability or guarantee their work.
  • We will not get involved in any contractual disputes between you and the plumber or underground worker.
  • We recommended that you obtain at least one quote before employing any contractor.
  • We recommend that you ask in advance, whether there is a charge for giving a quote.
  • Please make sure you receive a certificate of water regulations compliance (TAPS) from the plumber or underground worker, after they have completed the work.
    See notes below on certificates.
  • Make sure that the work is carried out or witnessed by one of the named persons listed as being approved for that company.
  • The companies and their approved persons are not able to carry out any work in the public highway without the consent of the local Highway Authority.
  • If you require a connection to the outside stop valve and this cannot be achieved by excavating on your side of the boundary, please contact us 24 hours a day on 0800 316 9800 (Textphone number for the deaf and hard of hearing: 0800 3166 899). Our lines are open 24 hours a day. We will give you a quote for this work and this cost will be in addition to the work carried out by the approved plumber or contractor on your side of the boundary.
  • If you are also receiving a new connection from our Developer Services department, please provide the quote number and district number on your invoice, to the approved plumber or contractor, so they can enter this on the certificate of compliance.
  • Please also see the notes on certificates at the bottom of this page.

The Water Supply (Water Fittings) Regulations 1999, set requirements for the design, installation and maintenance of plumbing systems and water fittings.

The Department of Environment, Food and Rural Affairs (Defra) allows organisations such as Thames Water to run an approval scheme, which enables plumbers or contractors to self-certificate their own work.

This removes the need for a separate regulations inspection to be carried out by water companies, who have a duty to enforce the regulations.

Similar to schemes such as Gas Safety, we check all members to ensure that they are qualified plumbers or underground workers and have achieved the knowledge required in water regulations, before gaining approved status.

All members are audited every year and must produce evidence of public and employers liability insurance.

Please note that the approval is for the named person and not the plumbing or contracting company.

Although we have over 1,000 members in our scheme, only some members are available to take on extra work, through this listing.

Under Regulation 6, of the Water Supply (Water Fittings) Regulations 1999, the approved contractor is required to issue a certificate of compliance.

We supply these certificates to members of the scheme free of charge.

The forms are carbonated so the approved person can issue the following:

Top copy

This is given to you the customer or developer, and is proof that the installation complies with the water regulations.

Middle copy

This is sent to us, as your local water company.

Send to:

Thames Water

Water Regulations Planning

PO Box 508

Swindon

SN28 9TU

Faxed copies are not accepted.

If you need a new connection from us, please note that unless we receive the original middle copy from the approved plumber or contractor, a regulation inspection will be required

Bottom copy 

This is for the approved plumber's own records.

There are currently four types of certificates:

TAPS 3

For internal work in new properties and can be only issued by an approved plumber.

TAPS 4

For internal work in existing properties that require no new connections or upgrades of supply size from Thames Water. This can only be issued by an approved plumber.

TAPS 5

For underground supply pipes from an outside stop valve or boundary to an inside stop valve. Either an approved plumber or underground worker can issue this.

TAPS 6

For notification work. This is issued by an approved plumber and is followed up by a TAPS 4 certificate once the work is complete.

To feedback about a plumber, contractor or this list, you can contact us in the following ways:

Email us

approved.plumbers@thameswater.co.uk\

Write to us

Thames Water

Approved Plumber Scheme

PO Box 286

Swindon

SN38 2RA

Call us

Please call us on 0800 316 9800. Our lines are open 24 hours a day.

(Textphone number for the deaf or hard of hearing: 0800 3166 899).

To feedback about a plumber, contractor or this list, you can contact us in the following ways:

Email us

approved.plumbers@thameswater.co.uk

Write to us

Thames Water

Approved Plumber Scheme

PO Box 286

Swindon

SN38 2RA

Call us

Please call us on 0800 316 9800. Our lines are open 24 hours a day.

(Textphone number for the deaf or hard of hearing: 0800 3166 899).

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