F0/100
Farmington Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 21,717 residents · Missouri
What's In Farmington's Tap Water?
72
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
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
Water Utility Details
FARMINGTON PWS
Population Served
18,217
Water Source
Groundwater
System ID
MO4010270
FARMINGTON CORRECTIONAL CENTER
Population Served
3,500
Water Source
Groundwater
System ID
MO4069041
Frequently Asked Questions About Farmington Water
Is Farmington tap water safe to drink?
Farmington, Missouri tap water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 258 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Farmington's water?
Of the 72 contaminants tested in Farmington's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Farmington have any water quality violations?
Yes, Farmington has 258 EPA violation(s) on record, with the most recent in 2025. Violation types include Other, MCL, MR. 194 of these are health-based violations, which are the most serious category.
Do I need a water filter in Farmington?
Farmington water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. 1 contaminant(s) exceed these stricter goals.
Where does Farmington's tap water come from?
Farmington's drinking water is sourced from groundwater and supplied by FARMINGTON PWS and 1 other water system(s). The system serves approximately 21,717 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Farmington's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Farmington's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Farmington's water compare to other cities in Missouri?
Farmington's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our Missouri state page to see how all cities in the state compare.
What should I do if I'm concerned about Farmington's water quality?
If you have concerns about Farmington's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (FARMINGTON PWS) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.