Thames Water

Thames Water Utilities Ltd.

Website address:

Water Regulations contact: Regulations Department

Direct Telephone Number: 0800 316 9800 (Monday to Friday 08:00 to 16:00), during out of hours please ring the customer centre on 0800 316 9800 and ask for a call back from the Water Regulations Team. 

Email addresses:
Technical / notification enquiries / RPZ enquiries –
Planning/rescheduling of inspections – 
Approved plumber scheme  -

Address for postal submission of all regulation 5 notifications, RPZ test certificates and approved plumber related correspondence:

Thames Water Utilities Limited
Water Regulations
PO Box 508 
SN28 9TU

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