Nitrate Vulnerable Zones (NVZ)

Nitrate Vulnerable Zones (NVZs) were areas within Wales that contain surface water or groundwater that is susceptible to nitrate pollution from agricultural activities. They were designated in 2013 accordance with the requirements of the European Commission’s Nitrates Directive 91/676/EEC, which aimed to protect water quality across Europe by preventing nitrates from agricultural sources polluting ground and surface waters and by promoting the use of good farming practices. In April 2021 the designated NVZs in Wales were revoked by the introduction of the Water Resources (Control of Agricultural Pollution)(Wales) Regulations with some measures transitioning into law over a period of time. The transition periods do not apply to those farms located in previously designated NVZ
where all the measures within CoAPR apply immediately. This dataset is relevant until all measures transition into law.

硝酸盐易受污染区（NVZs）系指威尔士境内含有易受农业活动产生的硝酸盐污染影响的地面水或地下水的区域。这些区域于2013年根据欧洲委员会《硝酸盐指令》91/676/EEC的要求被指定，旨在通过防止农业来源的硝酸盐污染地表水和地下水，并推广良好农业实践，以保护欧洲的水质。2021年4月，威尔士指定的NVZs因《水资源（控制农业污染）（威尔士）法规》的引入而被撤销，其中部分措施在一段时间内过渡为法律。过渡期不适用于那些位于先前指定NVZ且所有CoAPR措施立即适用的农场。本数据集的相关性将持续至所有措施过渡为法律为止。