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• Drinking Water Safeguard Zones (Groundwater)

  Drinking Water Groundwater Safeguard Zones (SgZs) are established around public water supplies where additional pollution control measures are needed. The Water Framework Directive requires that...

  • Published by: Environment Agency
  • Updated: 9 July 2025

• Drinking Water Safeguard Zones (Surface Water)

  Drinking Water Safeguard Zones (Surface Water) are catchment areas that influence the water quality for their respective Drinking Water Protected Area (Surface Water). They are identified where the...

  • Published by: Environment Agency
  • Updated: 23 November 2022

• Source Protection Zones [Merged]

  Source Protection Zones [Merged] have been created as public facing outlines where common boundaries and overlaps (based on zone number) have been removed. Source Protection Zones (SPZs) are...

  • Published by: Environment Agency
  • Updated: 1 July 2025

• Nitrate Vulnerable Zones (NVZ) 2021 Designations

  This dataset identifies Nitrate Vulnerable Zones for implementation in 2021.

  The designations are made by the Secretary of State for the purposes of the Nitrate Pollution Prevention Regulations...

  • Published by: Environment Agency

• Drinking Water Protected Areas (Surface Water)

  Drinking Water Protected Areas (Surface Water) are defined by the Water Environment (Water Framework Directive) (England & Wales) Regulations 2017 (or WFD Regulations) as locations where raw water...

  • Published by: Environment Agency
  • Updated: 23 November 2022