F8/100
SUN PRAIRIE VILLAGE COUNTY — Water Quality Report 2026
Serving 1,800 people · Montana
Water Source
Groundwater
County
—
System ID
MT0000521
Violations
89
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: October 1, 2023 – October 19, 2023Enforcement: Resolving — corrective action underway
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2023 – October 19, 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 SUN PRAIRIE VILLAGE COUNTY
Is SUN PRAIRIE VILLAGE COUNTY water safe to drink?
SUN PRAIRIE VILLAGE COUNTY water receives a grade of F (8/100), which is considered failing. 0 contaminant(s) exceed EPA legal limits and 89 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has SUN PRAIRIE VILLAGE COUNTY detected?
31 contaminants were tested in SUN PRAIRIE VILLAGE COUNTY's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does SUN PRAIRIE VILLAGE COUNTY have any EPA violations?
Yes, SUN PRAIRIE VILLAGE COUNTY has 89 EPA violation(s) on record, with the most recent in 2023. Violation types include Other, MR.
How many people does SUN PRAIRIE VILLAGE COUNTY serve?
SUN PRAIRIE VILLAGE COUNTY serves approximately 1,800 people, Montana. The system provides water to 1 community: Great Falls.
What type of water does SUN PRAIRIE VILLAGE COUNTY provide?
SUN PRAIRIE VILLAGE COUNTY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is MT0000521.
How does SUN PRAIRIE VILLAGE COUNTY compare to other utilities in Montana?
SUN PRAIRIE VILLAGE COUNTY scores 8/100 with a grade of F (failing). This score suggests significant water quality concerns relative to other utilities. Visit our Montana state page for a full comparison of water systems.