C55/100
UNION COUNTY WATER SYSTEM — Water Quality Report 2026
Serving 167,554 people · North Carolina
Water Source
Surface Water
County
—
System ID
NC0190413
Violations
14
Contaminant Test Results
2 contaminants above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
PFOS | 0.004 µg/L | 0.004 µg/L | Over Limit |
chlorate | 282.00 µg/L | — | Above Goal |
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – November 14, 2024Enforcement: 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 UNION COUNTY WATER SYSTEM
Is UNION COUNTY WATER SYSTEM water safe to drink?
UNION COUNTY WATER SYSTEM water receives a grade of C (55/100), which is considered fair. 1 contaminant(s) exceed EPA legal limits and 14 violation(s) are on record. Customers may want to consider using a water filter.
What contaminants has UNION COUNTY WATER SYSTEM detected?
76 contaminants were tested in UNION COUNTY WATER SYSTEM's water. Notable contaminants include PFOS, chlorate. 1 exceed EPA legal limits (MCLs). 2 exceed EPA health goals (MCLGs).
Does UNION COUNTY WATER SYSTEM have any EPA violations?
Yes, UNION COUNTY WATER SYSTEM has 14 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MCL, RPT. 5 are health-based violations.
How many people does UNION COUNTY WATER SYSTEM serve?
UNION COUNTY WATER SYSTEM serves approximately 167,554 people, North Carolina. The system provides water to 1 community: Monroe.
What type of water does UNION COUNTY WATER SYSTEM provide?
UNION COUNTY WATER SYSTEM sources its water from surface water. Surface water comes from rivers, lakes, or reservoirs and typically requires more extensive treatment. The utility's system ID is NC0190413.
How does UNION COUNTY WATER SYSTEM compare to other utilities in North Carolina?
UNION COUNTY WATER SYSTEM scores 55/100 with a grade of C (fair). This score indicates room for improvement compared to other utilities. Visit our North Carolina state page for a full comparison of water systems.