Water Quality: Colton, CA
4 water systems • 49,425 people served
Multiple Health ViolationsWater Quality Summary
Colton is served by 4 public water systems with a combined service population of 49,425 people, and has 30 EPA Safe Drinking Water Act violations on record. Critically, 6 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Colton's violation count is 38% below the national average for California. Contaminants associated with violations include Gross Alpha.
Contaminants Found
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)
Water Systems Serving Colton
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| COLTON, CITY OF | CA3610014 | Groundwater | 46,525 | 3 |
| TERRACE WATER COMPANY | CA3610048 | Groundwater | 2,400 | 12 |
| OLIVE DELL RANCH | CA3600187 | Groundwater | 350 | 12 |
| RECHE CANYON MUTUAL WATER CO. | CA3301541 | Groundwater | 150 | 3 |
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.