Water Quality: Hawthorne, CA
5 water systems • 321,206 people served
Multiple Health ViolationsWater Quality Summary
Hawthorne is served by 5 public water systems with a combined service population of 321,206 people, and has 8 EPA Safe Drinking Water Act violations on record. Critically, 4 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Hawthorne's violation count is 83% below the national average for California. Contaminants associated with violations include Arsenic.
Contaminants Found
Long-term exposure increases risk of skin, bladder, and lung cancers, as well as cardiovascular and neurological effects.
Common source: Natural rock deposits, agricultural pesticides, industrial waste
EPA limit: 0.010 mg/L (10 ppb)
Water Systems Serving Hawthorne
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| GSWC - SOUTHWEST | CA1910155 | Surface Water | 277,740 | 1 |
| GOLDEN STATE WATER COMPANY - ORCUTT | CA4210016 | Surface Water | 34,102 | 3 |
| GOLDEN STATE WATER COMPANY - LOS OSOS | CA4010017 | Groundwater | 5,924 | 0 |
| GOLDEN STATE WATER COMPANY - TANGLEWOOD | CA4210021 | Surface Water | 1,947 | 0 |
| GOLDEN STATE WATER COMPANY - EDNA | CA4010023 | Groundwater | 1,493 | 4 |
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.