Los Angeles County Ground Water Protection Areas

Back to Ground Water 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.

Los Angeles County GWPA map, PDF

Los Angeles 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
19S01N08W33 Runoff
19S01N09W35 Runoff
19S01N12W05 Runoff
19S01N12W08 Runoff
19S01N13W03* Runoff
19S01S08W03 Runoff
19S01S08W05 Runoff
19S01S09W03 Runoff
19S01S11W02 Runoff
19S01S11W09 Runoff
19S01S11W10 Runoff
19S01S11W11 Runoff
19S01S11W12 Runoff
19S01S11W14 Runoff
19S01S11W15 Runoff
19S01S11W21 Runoff
19S01S11W23 Runoff
19S01S11W26 Runoff
19S01S11W27 Runoff
19S02N13W33* Runoff
19S02S11W05 Runoff
19S02S11W07 Runoff
19S02S11W08 Runoff
19S02S11W18 Runoff
19S02S11W19 Runoff
19S02S12W01 Runoff
19S02S12W08 Runoff
19S02S12W12 Runoff
19S02S12W13 Runoff
19S02S12W14 Runoff
19S02S12W15 Runoff
19S02S12W16 Runoff
19S02S12W20 Runoff
19S02S12W21 Runoff
19S02S12W22 Runoff
19S02S12W23 Runoff
19S02S12W24 Runoff
19S02S12W25 Runoff
19S02S12W26 Runoff
19S02S12W27 Runoff
19S02S12W28 Runoff
19S02S12W29 Runoff
19S02S12W30 Runoff
19S02S12W31 Runoff
19S02S12W33 Runoff
19S02S12W34 Runoff
19S02S12W35 Runoff
19S02S12W36 Runoff
19S03N15W20 Leaching
19S03N15W23 Leaching
19S03N15W24 Leaching
19S03N15W25 Leaching
19S03N15W36 Leaching
19S03N16W12 Leaching
19S03S12W01 Runoff
19S03S12W02 Runoff
19S03S12W03 Runoff
19S03S12W04 Runoff
19S03S12W05 Runoff
19S03S12W08 Runoff
19S03S12W09 Runoff
19S03S12W10 Runoff
19S03S12W11 Runoff
19S03S12W12 Runoff
19S03S12W13 Runoff
19S03S12W14 Runoff
19S03S12W15 Runoff
19S03S12W16* Runoff
19S03S12W17 Runoff
19S04N15W21 Leaching
19S04N16W01 Leaching
19S04N16W04 Leaching
19S04N16W06 Leaching
19S04N16W08 Leaching
19S04N16W18 Leaching
19S04N17W01 Leaching
19S04N17W02 Leaching
19S04N17W05 Leaching
19S04N17W08 Leaching
19S04N17W12 Leaching
19S04N17W13 Leaching
19S04N17W14 Leaching
19S04N17W17 Leaching
19S04N17W21 Leaching
19S04N17W22 Leaching
19S04N17W23 Leaching
19S04N17W24 Leaching
19S04N17W28 Leaching
19S05N16W31 Leaching
19S05N17W21 Leaching
19S05N17W22 Leaching
19S05N17W25 Leaching
19S05N17W26 Leaching
19S05N17W27 Leaching
19S05N17W28 Leaching
19S05N17W35 Leaching
19S05N17W36 Leaching