Water Quality: Weldon, CA
6 water systems • 1,562 people served
Multiple Health ViolationsWater Quality Summary
Weldon is served by 6 public water systems with a combined service population of 1,562 people, and has 183 EPA Safe Drinking Water Act violations on record. Critically, 161 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Weldon's violation count is 281% above the national average for California. Contaminants associated with violations include Barium, Disinfection Byproducts, E. coli, Haloacetic Acids, Selenium.
Contaminants Found
Increases blood pressure and causes cardiovascular effects with long-term exposure.
Common source: Natural rock deposits, oil drilling operations, coal power plant waste
EPA limit: 2 mg/L
Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.
Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Linked to increased cancer risk and potential reproductive and developmental effects with long-term exposure.
Common source: Reaction of chlorine disinfectants with organic matter in treated water
EPA limit: 0.060 mg/L (60 ppb)
Hair loss, nail brittleness, and nervous system damage at elevated concentrations.
Common source: Natural geological deposits, mining discharges, oil refinery waste
EPA limit: 0.05 mg/L (50 ppb)
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
Not a direct health risk but reacts with disinfectants to form carcinogenic byproducts such as trihalomethanes.
Common source: Decaying plant material, algae, soil organic matter in source water
EPA limit: Treatment technique (must reduce TOC based on source water level)
Water Systems Serving Weldon
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| TRADEWIND WATER ASSOC. | CA1500406 | Groundwater | 632 | 40 |
| VALLEY ESTATES POA, INC. | CA1500478 | Groundwater | 386 | 1 |
| RAINBIRD VALLEY MWC | CA1500393 | Groundwater | 238 | 94 |
| BELLA VISTA MUTUAL WATER COMPANY | CA1502653 | Groundwater | 150 | 2 |
| LAKEVIEW RANCHOS MUTUAL WATER COMPANY | CA1500525 | Groundwater | 120 | 43 |
| HILLVIEW ACRES MUTUAL WATER COMPANY | CA1500448 | Groundwater | 36 | 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.