Water Quality: Farmington, MO
6 water systems • 23,579 people served
Multiple Health ViolationsWater Quality Summary
Farmington is served by 6 public water systems with a combined service population of 23,579 people, and has 138 EPA Safe Drinking Water Act violations on record. Critically, 72 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Farmington's violation count is 262% above the national average for Missouri. Contaminants associated with violations include Gross Alpha, HAA5, TTHM, Total Organic Carbon.
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)
Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.
Common source: Reaction of chlorine disinfectants with organic matter in treated water
EPA limit: 0.060 mg/L (60 ppb)
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 ppb)
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 Farmington
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| FARMINGTON PWS | MO4010270 | Groundwater | 18,217 | 47 |
| FARMINGTON CORRECTIONAL CENTER | MO4069041 | Groundwater | 3,500 | 19 |
| PILOT KNOB RURAL WD 1 N & S | MO4020601 | Groundwater | 839 | 13 |
| PILOT KNOB RURAL WD 1 DOE RUN AREA | MO4021451 | Groundwater | 507 | 42 |
| HUNTERS RIDGE SUBD | MO4031206 | Groundwater | 441 | 8 |
| FARMINGTON ASSISTED LIVING CENTER LLC | MO4069065 | Groundwater | 75 | 9 |
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 Missouri
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.