B66/100
THOMPSON FALLS CITY OF — Water Quality Report 2026
Serving 1,950 people · Montana
Water Source
Groundwater
County
—
System ID
MT0000341
Violations
30
Contaminant Test Results
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2015.
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 THOMPSON FALLS CITY OF
Is THOMPSON FALLS CITY OF water safe to drink?
THOMPSON FALLS CITY OF water receives a grade of B (66/100), which is considered good. Out of 1 contaminants tested, none exceed EPA legal limits. The water meets federal safety standards.
What contaminants has THOMPSON FALLS CITY OF detected?
1 contaminants were tested in THOMPSON FALLS CITY OF's water. No contaminants exceed EPA legal limits or health goals, indicating good water quality management.
Does THOMPSON FALLS CITY OF have any EPA violations?
Yes, THOMPSON FALLS CITY OF has 30 EPA violation(s) on record, with the most recent in 2015. Violation types include Other, MR, TT. 1 are health-based violations.
How many people does THOMPSON FALLS CITY OF serve?
THOMPSON FALLS CITY OF serves approximately 1,950 people, Montana. The system provides water to 1 community: Thompson Falls.
What type of water does THOMPSON FALLS CITY OF provide?
THOMPSON FALLS CITY OF sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MT0000341.
How does THOMPSON FALLS CITY OF compare to other utilities in Montana?
THOMPSON FALLS CITY OF scores 66/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our Montana state page for a full comparison of water systems.