UNITED KINGDOM · ENGLAND · LANDSCAPE · WATER
Source Protection Zones
ProDrawn as areasAppears from zoom level 9In the app's radius search
What this layer shows
Groundwater Source Protection Zones around public water supplies: Zone 1 (inner, 50-day travel time) is the most sensitive, then Zone 2 (outer) and Zone 3 (total catchment). They condition what can be discharged, stored or spread on the land above. 4,686 zones.
Where the data comes from
ARCGIS · environment.data.gov.uk
Merestone asks this service live for the area on screen. Nothing is copied or stored beyond a short cache.
Facts shown for each feature
Zone
In these presets
Contaminated land
Old landfills, regulated waste sites and the water beneath them. England only. No geology, superficial deposits or radon yet: BGS publishes its 625K geology openly and it is on the list. A ground report still has to be commissioned.
Other layers in this group
- Nitrate Vulnerable Zones 2013 (Wales)
- Internal Drainage Districts
- Nitrate Vulnerable Zones 2021
- Drinking Water Safeguard Zones (Surface)
- Drinking Water Safeguard Zones (Groundwater)
- Principal Salmon Fisheries (England)
- Bathing Waters (England)
- Bathing Waters (Scotland)
- Bathing Waters (Wales)
- Bathing Waters (Northern Ireland)
- Groundwater Bodies (WFD 2025)
- River Water Body Catchments (WFD 2025)