C53/100
LOLO WATER AND SEWER DIST — Water Quality Report 2026
Serving 3,315 people · Montana
Water Source
Groundwater
County
—
System ID
MT0000278
Violations
40
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – December 31, 2024Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2022 – August 1, 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 LOLO WATER AND SEWER DIST
Is LOLO WATER AND SEWER DIST water safe to drink?
LOLO WATER AND SEWER DIST water receives a grade of C (53/100), which is considered fair. 0 contaminant(s) exceed EPA legal limits and 40 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has LOLO WATER AND SEWER DIST detected?
1 contaminants were tested in LOLO WATER AND SEWER DIST's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does LOLO WATER AND SEWER DIST have any EPA violations?
Yes, LOLO WATER AND SEWER DIST has 40 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, MCL. 1 are health-based violations.
How many people does LOLO WATER AND SEWER DIST serve?
LOLO WATER AND SEWER DIST serves approximately 3,315 people, Montana. The system provides water to 1 community: Lolo.
What type of water does LOLO WATER AND SEWER DIST provide?
LOLO WATER AND SEWER DIST sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MT0000278.
How does LOLO WATER AND SEWER DIST compare to other utilities in Montana?
LOLO WATER AND SEWER DIST scores 53/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our Montana state page for a full comparison of water systems.