A82/100
MAYVILLE CITY OF — Water Quality Report 2026
Serving 1,858 people · North Dakota
Water Source
Purchased Groundwater
County
—
System ID
ND4900622
Violations
7
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2007.
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 MAYVILLE CITY OF
Is MAYVILLE CITY OF water safe to drink?
MAYVILLE CITY OF water receives a grade of A (82/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has MAYVILLE CITY OF detected?
1 contaminants were tested in MAYVILLE CITY OF's water. Notable contaminants include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 exceed EPA health goals (MCLGs).
Does MAYVILLE CITY OF have any EPA violations?
Yes, MAYVILLE CITY OF has 7 EPA violation(s) on record, with the most recent in 2007. Violation types include MCL, MR, TT. 2 are health-based violations.
How many people does MAYVILLE CITY OF serve?
MAYVILLE CITY OF serves approximately 1,858 people, North Dakota. The system provides water to 1 community: Mayville.
What type of water does MAYVILLE CITY OF provide?
MAYVILLE CITY OF sources its water from purchased groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is ND4900622.
How does MAYVILLE CITY OF compare to other utilities in North Dakota?
MAYVILLE CITY OF scores 82/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our North Dakota state page for a full comparison of water systems.