Contra Costa County Groundwater Protection Areas

Back to Groundwater Protection Area Locations

Locations of GWPAs can be accessed below in several formats. View the groundwater regulations and mitigation measures to understand and meet the requirements for the GWPAs.

Contra Costa County GWPA map, PDF

Contra Costa County shapefile, ZIP

The zip file includes eight files that comprise the shapefile. These files should be unzipped and remain together in a single directory. The shapefile may be opened with a GIS software such as ArcGIS, QGIS, or Google Earth.

List of GWPAs by Section (County, Meridian, Township, Range, Section [COMTRS])

The initial GWPAs became effective on May 27, 2004. The new GWPAs effective January 1, 2020 are marked with an asterisk *.

County Meridian Township Range Section and Condition

COMTRS	Conditions
07M01S03E03*	Runoff
07M01S03E04	Runoff
07M02N02W14	Runoff
07M02N02W24	Runoff

Version 2025.01 (2023 PUR Data Update)