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 Drinking Water Protected Areas are identified (WFD Article 7.1) and that they are given the necessary protection (WFD Article 7.3) with the aim of avoiding deterioration in their quality in order to reduce the level of purification treatment required in the production of drinking water.

The geometry of Groundwater Safeguard Zones are based on Groundwater Source Protection Zones (SPZs)*, usually the SPZ 2, and use additional assessment to identify areas, which may or may not coincide with the SPZ, where additional measures are required to ensure that abstraction waters meet Article 7.3 of the WFD. SgZs can be large or small depending on the pollution problem and may not cover the whole of a catchment or sub-catchment.

*AfA029 Source Protection Zones [Merged] is available. Attribution statement: Contains Environment Agency information © Environment Agency and/or database rights.
Derived from BGS digital data under licence from British Geological Survey copyright NERC.

饮用水地下水保护区域（SgZs）系围绕公共供水设施设立，旨在针对需要额外污染控制措施的区域。根据《水框架指令》的要求，须识别饮用水保护区（WFD第七条第一款）并予以必要的保护（WFD第七条第三款），以防止其质量下降，从而降低饮用水生产所需的净化处理水平。地下水保护区域的几何形状基于地下水源保护区（SPZs）*，通常为SPZ 2，并采用额外的评估方法以确定可能或可能不与SPZ重合的区域，在这些区域需要采取额外措施以确保抽取的水质符合WFD第七条第三款的要求。SgZs的规模可能大或小，取决于污染问题，且可能不完全覆盖整个流域或子流域。*参见‘AfA029 源保护区[合并]’。致谢声明：包含环境署信息©环境署和/或数据库权利。数据来源于英国地质调查局数字数据，许可依据英国地质调查局版权NERC。