B75/100
MOUNT HOLLY, CITY OF — Water Quality Report 2026
Serving 19,200 people · North Carolina
Water Source
Surface Water
County
—
System ID
NC0136020
Violations
22
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.004 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
2
Violations (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2025 – March 31, 2025Rule: Stage 2 DBPREnforcement: Formal — state order issued
TIER 3Resolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: September 1, 2022 – November 30, 2022Rule: Stage 2 DBPREnforcement: Formal — state order issued
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 MOUNT HOLLY, CITY OF
Is MOUNT HOLLY, CITY OF water safe to drink?
MOUNT HOLLY, CITY OF water receives a grade of B (75/100), which is considered good. Out of 69 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has MOUNT HOLLY, CITY OF detected?
69 contaminants were tested in MOUNT HOLLY, CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MOUNT HOLLY, CITY OF have any EPA violations?
Yes, MOUNT HOLLY, CITY OF has 22 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, Other.
How many people does MOUNT HOLLY, CITY OF serve?
MOUNT HOLLY, CITY OF serves approximately 19,200 people, North Carolina. The system provides water to 1 community: Mt Holly.
What type of water does MOUNT HOLLY, CITY OF provide?
MOUNT HOLLY, CITY OF 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 NC0136020.
How does MOUNT HOLLY, CITY OF compare to other utilities in North Carolina?
MOUNT HOLLY, CITY OF scores 75/100 with a grade of B (good). This is an above-average performance for utilities statewide. Visit our North Carolina state page for a full comparison of water systems.