Areas Vulnerable to Pollution by Nitrates of Agricultural Origin in the Indre-et-Loire

Vulnerable areas are land designated in accordance with European Directive No. 91-676.

A vulnerable area is a part of the territory where water pollution by direct or indirect discharge of nitrates of agricultural origin or other nitrogen compounds that may become nitrates threatens in the short term the quality of aquatic environments and, in particular, the supply of drinking water.

Vulnerable areas shall be considered as vulnerable areas where:
— Groundwater and surface fresh water, in particular those used or intended for water abstraction for human consumption, with a nitrate content exceeding 50 milligrams per litre,
— The waters of estuaries, coastal and marine waters and surface fresh waters which undergo eutrophication to which the enrichment of the water with nitrogen compounds from agricultural sources contributes.

An action programme shall be implemented in each department concerned, setting out the requirements to be complied with by all farmers in the corresponding vulnerable area. They are constructed in consultation with all relevant stakeholders, based on a local diagnosis. They aim to correct the most pollution-generating practices.
Outside vulnerable areas, a national code of good agricultural practice is voluntary.

Each vulnerable area corresponds to a prefectural decree (coordinating basin prefect) after consulting the departmental council of Hygiene, the general and regional councils and the basin committee. Vulnerable areas shall be reviewed at least every 4 years.
This decree is the founding regulatory text of the vulnerable area.

The list of municipalities or parts of municipalities in the Loire-Bretagne basin classified as vulnerable areas is drawn from Prefectural Orders Nos 21.231 and 21.230 of 30 August, supplemented by their annexes.

The list of municipalities or parts of municipalities in the Seine-Normandie basin classified as vulnerable areas is derived from Prefectural Order No IDF — 2021-08-04-00005 of 4 August 2021, supplemented by its annexes

脆弱水域（vulnerable areas）是依据欧盟第91/676号指令划定的陆地范围。

脆弱水域是指因农业源硝酸盐或其他可转化为硝酸盐的氮化合物通过直接或间接排放造成水污染，且该污染在短期内会威胁水生环境质量，尤其是饮用水供水安全的领土区域。

符合以下任一情形的区域均可认定为脆弱水域：
— 地下水和地表淡水（尤其是用于或拟用于人类饮用水取水的水体）硝酸盐含量超过50毫克/升；
— 河口、近岸海域、海洋水体以及地表淡水水体发生富营养化，且该富营养化与农业源氮化合物对水体的富集作用相关。

各相关省份均应制定并实施行动方案，明确对应脆弱水域内所有农户需遵守的生产要求。此类方案基于本地诊断结果，经与所有相关利益方协商后制定，旨在纠正污染贡献最为显著的农业生产行为。在非脆弱水域范围内，国家良好农业操作规范为自愿性标准。

每一处脆弱水域的划定均需依托行政省省长令（流域协调省长令），且需事先征询省卫生委员会、省及大区议会与流域委员会的意见。脆弱水域的划定范围至少每四年需复核一次。该省长令为脆弱水域认定的基础性监管依据。

卢瓦尔-布列塔尼流域内被认定为脆弱水域的市镇或市镇部分区域清单，源自8月30日发布的第21.231号及第21.230号省长令及其补充附件。
塞纳-诺曼底流域内被认定为脆弱水域的市镇或市镇部分区域清单，则源自2021年8月4日发布的第IDF—2021-08-04-00005号省长令及其补充附件。