Thames to Affinity Transfer - find out more

What’s the solution?

A transfer of raw water from Thames Water to Affinity Water. It would rely on new sources of water from one of the other strategic resources options (Severn Thames Transfer (STT), South East Strategic Resource Options (SESRO) or London reuse) contributing to a resilient water supply for Affinity Water. The transfer route and infrastructure requirements will depend on the source water and are being developed further as part of the development work.

Option 1 map key

• Green - Potential pipeline corridor option 1
• ][ - Potential crossing point
• 1 - Connection into existing raw water tunnel
• 2 - Proposed new water treatment works
• 3 - Connection into existing Affinity Water network
• 4 - Raw water pumping station
• 5 - Queen Mother Reservoir
• 6 - Wraysbury Reservoir

Option 2 map key

• Orange - Potential pipeline corridor option 2
• ][ - Potential crossing point
• Grey - Existing site
• Black - Proposed site
• 1 - River Lee intake
• 2 - Raw water pumping station
• 3 - Raw water transfer station
• 4 - Water treatment works and high lift pumping station
• 5 - Drinking water transfer main (pumped)
• 6 - Drinking water transfer main (gravity)

Our plans currently show the need for the Thames to Affinity Transfer in the 2040s so we will continue to develop this option.