F0/100
FARMINGTON PWS — Water Quality Report 2026
Serving 18,217 people · Missouri
Water Source
Groundwater
County
—
System ID
MO4010270
Violations
128
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
4
Violations (last 5yr)
2
Unresolved
2
Health-Related
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
When: October 1, 2024 – September 30, 2025Verify on EPA.gov
TIER 2Unresolved
Exceeded the Maximum Contaminant Level (running average)
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – March 6, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2021 – February 28, 2022Enforcement: Resolving — corrective action underway
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Frequently Asked Questions About FARMINGTON PWS
Is FARMINGTON PWS water safe to drink?
FARMINGTON PWS water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 128 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has FARMINGTON PWS detected?
72 contaminants were tested in FARMINGTON PWS's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does FARMINGTON PWS have any EPA violations?
Yes, FARMINGTON PWS has 128 EPA violation(s) on record, with the most recent in 2024. Violation types include MCL, Other, MR. 120 are health-based violations.
How many people does FARMINGTON PWS serve?
FARMINGTON PWS serves approximately 18,217 people, Missouri. The system provides water to 1 community: Farmington.
What type of water does FARMINGTON PWS provide?
FARMINGTON PWS sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MO4010270.
How does FARMINGTON PWS compare to other utilities in Missouri?
FARMINGTON PWS scores 0/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Missouri state page for a full comparison of water systems.