Water Quality: Twain Harte, CA
5 water systems • 3,500 people served
Some ConcernsWater Quality Summary
Twain Harte is served by 5 public water systems with a combined service population of 3,500 people, and has 15 EPA Safe Drinking Water Act violations on record. Critically, 2 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Twain Harte's violation count is 69% below the national average for California. Contaminants associated with violations include Stage 2 DBP.
Contaminants Found
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 Twain Harte
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| TWAIN HARTE COMMUNITY SERVICES DISTRICT | CA5510005 | Surface Water | 2,378 | 0 |
| SIERRA VILLAGE MUTUAL WATER CO | CA5500074 | Groundwater | 361 | 2 |
| LEISURE PINES MUTUAL WATER CO | CA5500053 | Groundwater | 340 | 3 |
| SUGAR PINE RV RESORT | CA5500115 | Groundwater | 219 | 6 |
| TWAIN HARTE VALLEY MWC | CA5500080 | Surface Water | 202 | 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.