A80/100
ROUNDUP WATER DEPARTMENT — Water Quality Report 2026
Serving 1,900 people · Montana
Water Source
Groundwater
County
—
System ID
MT0000321
Violations
12
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.041 mg/L | 0.015 mg/L | Over Limit |
EPA Violation History
1
Violation (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, 2023 – December 31, 2023Enforcement: 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 ROUNDUP WATER DEPARTMENT
Is ROUNDUP WATER DEPARTMENT water safe to drink?
ROUNDUP WATER DEPARTMENT water receives a grade of A (80/100), which is considered excellent. Out of 1 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has ROUNDUP WATER DEPARTMENT detected?
1 contaminants were tested in ROUNDUP WATER DEPARTMENT's water. Notable contaminants include Lead (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does ROUNDUP WATER DEPARTMENT have any EPA violations?
Yes, ROUNDUP WATER DEPARTMENT has 12 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MON, Other.
How many people does ROUNDUP WATER DEPARTMENT serve?
ROUNDUP WATER DEPARTMENT serves approximately 1,900 people, Montana. The system provides water to 1 community: Roundup.
What type of water does ROUNDUP WATER DEPARTMENT provide?
ROUNDUP WATER DEPARTMENT sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MT0000321.
How does ROUNDUP WATER DEPARTMENT compare to other utilities in Montana?
ROUNDUP WATER DEPARTMENT scores 80/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Montana state page for a full comparison of water systems.