Sonora, CA
Contamination score
Higher = more contaminated vs. other cities.
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Reported illness & cancer claims
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Self-reported issues
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Pollution sources & reported claims near your water
Factories, greenhouses, and contaminated sites mapped around the water supply. Tap any circle for detail.
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Public water systems
TUD - SONORA/JAMESTOWN WATER SYSTEM
- PWSID:
- CA5510001
- Source:
- Surface water
- Serves:
- 11,054 people
Tud - Tuolumne Water System
- PWSID:
- CA5510003
- Source:
- Surface water
- Serves:
- 1,761 people
EPA & DEP violations
TUD - SONORA/JAMESTOWN WATER SYSTEM
PWSID CA55100011 violationMonitoring violation — TUD - SONORA/JAMESTOWN WATER SYSTEM
low severityResolvedEPA SDWIS violation 9511003 (code 3D) at TUD - SONORA/JAMESTOWN WATER SYSTEM (PWSID CA5510001).
EPA SDWIS · Monitoring violation · Began Apr 1, 2025 · 1 year ago · Source ↗
Tud - Tuolumne Water System
PWSID CA55100031 violationRevised Total Coliform Rule — MON violation
medium severityResolvedRevised Total Coliform Rule MON violation (Resolved).
EPA SDWIS · MON · Began Apr 1, 2025 · 1 year ago · Source ↗
Water-related lawsuits
No lawsuits on record.
In the news & sources
No coverage linked yet.