Water Quality: Sonora, CA
14 water systems • 37,743 people served
Multiple Health Violations23
Total Violations
5
Health-Based Violations
14
Water Systems
37,743
Population Served
Water Quality Summary
Sonora has 5 health-based violations on record, meaning one or more contaminants were found above EPA-established safe levels. Contaminants involved: E. coli, Gross Alpha, Stage 2 DBP, Total Haloacetic Acids (HAA5). In total, 23 violations are on record for 14 water systems serving 37,743 people.
Contaminants Found
E. coli
Gross Alpha
Stage 2 DBP
Total Haloacetic Acids (HAA5)
Water Systems Serving Sonora
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| TUD - UPPER BASIN WATER SYSTEM | CA5510012 | Surface Water | 13,280 | 0 |
| TUD - SONORA/JAMESTOWN WATER SYSTEM | CA5510001 | Surface Water | 11,054 | 1 |
| TUD - COLUMBIA WATER SYSTEM | CA5510013 | Surface Water | 5,463 | 0 |
| TUD - PONDEROSA | CA5510002 | Surface Water | 1,767 | 2 |
| TUD - TUOLUMNE WATER SYSTEM | CA5510003 | Surface Water | 1,761 | 1 |
| PHOENIX LAKE ESTATES CC MWC | CA5510026 | Groundwater | 1,168 | 2 |
| SONORA MEADOWS MUTUAL WTR CO | CA5510023 | Surface Water | 1,123 | 6 |
| TUD-APPLE VALLEY ESTATES | CA5510028 | Groundwater | 826 | 1 |
| BELLEVIEW OAKS MUTUAL WATER CO | CA5500042 | Groundwater | 468 | 1 |
| SLIDE INN SNOWBOWL WATER CO | CA5500077 | Groundwater | 417 | 1 |
| MOTHER LODE MOBILE ESTATES | CA5500125 | Groundwater | 210 | 1 |
| TUD-PEACEFUL PINES WATER SYSTEM | CA5510021 | Groundwater | 92 | 0 |
| TUD-WARDS FERRY RANCHES | CA5500363 | Groundwater | 62 | 2 |
| PONDEROSA MOBILE HOME PARK | CA5500092 | Groundwater | 52 | 5 |
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.
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.