County · California
Kern County, California: drinking water records
This overview covers 47 ZIP codes and 172 community water systems in Kern County. It also stands in for 2 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Oildale Mwc CA1510015 | 44,899 | 240 | 0 | 5 | 0 ppb |
| East Niles CSD CA1510006 | 32,517 | 240 | 0 | 3 | 1.4 ppb |
| Arvin Community Services Dist CA1510001 | 19,669 | 180 | 0 | 12 | 0 ppb |
| Lamont Public Utility Dist CA1510012 | 19,057 | 360 | 0 | 5 | 1.9 ppb |
| Mcfarland, City of CA1510013 | 14,161 | 150 | 0 | 6 | 0 ppb |
| Greenfield County WD CA1510024 | 11,590 | 360 | 0 | 11 | 1.0 ppb |
| Edwards Afb - Main Base CA1510701 | 11,316 | 240 | 0 | 1 | 1.7 ppb |
| Tehachapi, City of CA1510020 | 9,094 | 60 | 0 | 1 | 0 ppb |
| Bear Valley CSD CA1510038 | 5,592 | 360 | 1 | 1 | 0 ppb |
| Cci - Tehachapi CA1510800 | 2,993 | 60 | 0 | 1 | 1.6 ppb |
| Cws - Bakersfield CA1510003 | 267,881 | 2,940 | 7 | 0 | 2.8 ppb |
| Bakersfield, City of CA1510031 | 160,144 | 2,610 | 3 | 0 | 1.3 ppb |
| Delano, City of CA1510005 | 51,428 | 720 | 0 | 0 | 0 ppb |
| Indian Wells Valley W.D. CA1510017 | 41,580 | 510 | 0 | 0 | 0 ppb |
| Tejon Castac WD - I5 & Laval Rd CA1503341 | 38,125 | 120 | 0 | 0 | 0 ppb |
| Vaughn Wc INC CA1510029 | 37,189 | 780 | 2 | 0 | 0 ppb |
| Cws - North Garden CA1510055 | 22,762 | 660 | 1 | 0 | 3.2 ppb |
| Wasco, City of CA1510021 | 22,757 | 360 | 0 | 0 | 0 ppb |
| Shafter, City of CA1510019 | 21,915 | 360 | 0 | 0 | 0 ppb |
| West Kern Water District CA1510022 | 20,500 | 60 | 0 | 0 | 0 ppb |
| Rosamond CSD CA1510018 | 17,711 | 180 | 0 | 0 | 0 ppb |
| California City, City of CA1510032 | 14,198 | 360 | 0 | 0 | 0 ppb |
| Golden Hills CSD CA1510045 | 9,857 | 480 | 7 | 0 | 0 ppb |
| China Lake Naval Air Weapons Station CA1510703 | 6,600 | 360 | 0 | 0 | 0 ppb |
| Wasco St. Prison Reception Ctr CA1510801 | 5,124 | 60 | 0 | 0 | 0 ppb |
ZIP reports in Kern County
No ZIP report in this county is published yet.
These ZIP codes are covered by this overview because their utility has too little EPA data for a separate page: 93220, 93518.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.