Dataset - CKAN MobiDataLab

Drinking water extraction locations where nitrate has been designated as a (p...

This map indicates at which extraction sites nitrate has been found as a potential or current problem substance. The map is based on information from the area files for drinking...
- http://publications.europa.eu/resource/authority/file-type/WMS_SRVC
- http://publications.europa.eu/resource/authority/file-type/WFS_SRVC

You can also access this registry using the API (see API Docs).