D36/100
UPPER SOURIS WATER DISTRICT-SYSTEM I — Water Quality Report 2026
Serving 1,296 people · North Dakota
Water Source
Purchased Groundwater
County
—
System ID
ND5101074
Violations
12
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 2.18 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring / Reporting Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 18, 2023 – November 20, 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
Frequently Asked Questions About UPPER SOURIS WATER DISTRICT-SYSTEM I
Is UPPER SOURIS WATER DISTRICT-SYSTEM I water safe to drink?
UPPER SOURIS WATER DISTRICT-SYSTEM I water receives a grade of D (36/100), which is considered poor. 1 contaminant(s) exceed EPA legal limits and 12 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has UPPER SOURIS WATER DISTRICT-SYSTEM I detected?
2 contaminants were tested in UPPER SOURIS WATER DISTRICT-SYSTEM I's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does UPPER SOURIS WATER DISTRICT-SYSTEM I have any EPA violations?
Yes, UPPER SOURIS WATER DISTRICT-SYSTEM I has 12 EPA violation(s) on record, with the most recent in 2023. Violation types include MR, MCL. 11 are health-based violations.
How many people does UPPER SOURIS WATER DISTRICT-SYSTEM I serve?
UPPER SOURIS WATER DISTRICT-SYSTEM I serves approximately 1,296 people, North Dakota.
What type of water does UPPER SOURIS WATER DISTRICT-SYSTEM I provide?
UPPER SOURIS WATER DISTRICT-SYSTEM I sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ND5101074.
How does UPPER SOURIS WATER DISTRICT-SYSTEM I compare to other utilities in North Dakota?
UPPER SOURIS WATER DISTRICT-SYSTEM I scores 36/100 with a grade of D (poor). This score suggests significant water quality concerns relative to other utilities. Visit our North Dakota state page for a full comparison of water systems.