A82/100
Moscow Mills Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 4,500 residents · Missouri
What's In Moscow Mills's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
5
Violations (last 5yr)
2
Unresolved
1
Health-Related
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
TIER 3Resolved
Disinfection byproduct treatment technique failure
When: December 14, 2023 – January 31, 2024Rule: Ground Water RuleEnforcement: Resolving — corrective action underway
TIER 2Resolved
Failed treatment technique requirements
When: February 1, 2023 – February 28, 2023Rule: Consumer Confidence RuleEnforcement: Resolving — corrective action underway
TIER 3Resolved
Failed to issue ongoing public notification
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: November 1, 2022 – September 27, 2023Rule: Ground Water RuleEnforcement: 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
MOSCOW MILLS PWS
Population Served
4,500
Water Source
Groundwater
System ID
MO6010547
Frequently Asked Questions About Moscow Mills Water
Is Moscow Mills tap water safe to drink?
Moscow Mills, Missouri tap water receives a grade of A (82/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Moscow Mills's water?
1 contaminants were tested in Moscow Mills's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Moscow Mills have any water quality violations?
Yes, Moscow Mills has 10 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, Other, TT. 2 of these are health-based violations, which are the most serious category.
Do I need a water filter in Moscow Mills?
Moscow Mills 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. All contaminants are within health goals.
Where does Moscow Mills's tap water come from?
Moscow Mills's drinking water is sourced from groundwater and supplied by MOSCOW MILLS PWS. The system serves approximately 4,500 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Moscow Mills'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. Moscow Mills'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 Moscow Mills's water compare to other cities in Missouri?
Moscow Mills's water quality score of 82/100 earns a grade of A, which is considered excellent. This places Moscow Mills among the better-performing water systems in Missouri. Visit our Missouri state page to see how all cities in the state compare.
What should I do if I'm concerned about Moscow Mills's water quality?
If you have concerns about Moscow Mills'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 (MOSCOW MILLS 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.