Water Resource Zones (WRZs)

Boundaries, names and Water Resource Management Plan 19 (WRMP19) water deficit Dry Year Annual Average (DYAA) categories for the 138 water resource zones in England and Wales.

The information contained within these Water Efficiency maps is provided to MOSL by water companies and the Environment Agency, and MOSL gives no warranty and accepts no responsibly or liability for the accuracy of completeness of the information on this website. We will not be liable for any reliance on the information on this website or for the non-availability of the website. The boundaries shown are indicative and are not intended to be used at the individual premise level. MOSL takes no responsibility for determining supply boundaries. For specific queries relating to supply please contact the relevant water companies directly.

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