Water Quality: Lancaster, CA
19 water systems • 8,296 people served
Multiple Health ViolationsWater Quality Summary
Lancaster is served by 19 public water systems with a combined service population of 8,296 people, and has 608 EPA Safe Drinking Water Act violations on record. Critically, 285 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Lancaster's violation count is 1166% above the national average for California. Contaminants associated with violations include Barium, Gross Alpha, Nitrate, Stage 2 DBP, Surface Water Treatment.
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Alpha-emitting radioactive particles increase cancer risk, particularly from bone and other internal cancers.
Common source: Natural uranium and radium in geological formations
EPA limit: 15 pCi/L (excluding radon and uranium)
Causes methemoglobinemia (blue baby syndrome) in infants, reducing the blood's ability to carry oxygen.
Common source: Fertilizer runoff, septic systems, animal feedlots, natural deposits
EPA limit: 10 mg/L (as nitrogen)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Water Systems Serving Lancaster
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| LAND PROJECTS MUTUAL WATER CO. | CA1910246 | Groundwater | 2,800 | 368 |
| SUNDALE MUTUAL WATER COMPANY A, B | CA1900563 | Groundwater | 1,050 | 7 |
| AVERYDALE MWC | CA1910023 | Groundwater | 1,023 | 1 |
| WHITE FENCE FARMS MWC NO.3 | CA1900523 | Surface Water | 749 | 10 |
| LANDALE MUTUAL WATER COMPANY | CA1900809 | Groundwater | 550 | 3 |
| SHERWOOD MOBILE HOME PARK | CA1900907 | Groundwater | 540 | 1 |
| ANTELOPE PARK MUTUAL WATER COMPANY | CA1900794 | Groundwater | 445 | 1 |
| WESTERN SKIES MOBILE HOME PARK | CA1900541 | Groundwater | 198 | 2 |
| METTLER VALLEY MUTUAL | CA1900100 | Groundwater | 160 | 75 |
| AQUA J. MUTUAL WATER COMPANY | CA1900936 | Groundwater | 158 | 3 |
| WILSONA GARDENS MUTUAL | CA1900155 | Groundwater | 129 | 11 |
| EVERGREEN MUTUAL WATER COMPANY | CA1900804 | Groundwater | 98 | 1 |
| LANCASTER WATER COMPANY | CA1900808 | Groundwater | 80 | 5 |
| REESEDALE MUTUAL | CA1900145 | Groundwater | 76 | 12 |
| TIERRA BONITA MUTUAL WATER | CA1900154 | Groundwater | 75 | 3 |
| LANCASTER PARK MOBILE HOME PARK | CA1900038 | Groundwater | 60 | 66 |
| BLEICH FLATS MUTUAL | CA1900075 | Groundwater | 42 | 6 |
| COLORADO MUTUAL WATER COMPANY | CA1900801 | Groundwater | 39 | 3 |
| MITCHELL'S AVENUE E MOBILE HOME PARK | CA1900785 | Groundwater | 24 | 30 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in California
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.