PlainWater
Counties → North Dakota

Mercer County, North Dakota

Water Systems
10
Population Served
10,695
Total Violations
205
52 health-based
PFAS Detected
2
of 2 tested

Violation Analysis

100.0%
Systems with Violations
20.5
Avg Violations per System
25.4%
Health-Based Violations

Water Source Types

SW
6 systems (60%)
GW
4 systems (40%)

PFAS Contamination

2
Systems Tested
2
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Mercer North Dakota water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (10)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Omnd Water Treatment Plant 4,168 4 Clean
Beulah City Of 3,058 16 Clean
Hazen City Of 2,411 2 -
Stanton City Of 366 18 -
Zap City Of 237 28 -
Golden Valley City Of 182 23 -
Pick City City Of 123 24 -
Beulah Bay Rec Area #2 100 41 -
Beulah Bay Rec Area 25 37 -
Hazen Bay Recreation Area 25 12 -

Other Counties in North Dakota

Cass County
27 systems · 176,764 served · 915 violations
Burleigh County
12 systems · 92,574 served · 263 violations
Grand Forks County
9 systems · 69,787 served · 232 violations
Ward County
14 systems · 65,645 served · 589 violations
Williams County
22 systems · 38,366 served · 564 violations
Stark County
8 systems · 36,506 served · 136 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Mercer County? ▼
Mercer County has 205 total drinking water violations across 10 water systems, of which 52 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Mercer County systems? ▼
Water systems in Mercer County serve approximately 10,695 people through 10 public water systems.
Has PFAS been detected in Mercer County water? ▼
Of 2 water systems tested for PFAS in Mercer County, 2 had PFAS detected (100.0% detection rate).
What types of water sources supply Mercer County? ▼
Water systems in Mercer County use SW (6 systems), GW (4 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 25.4% of Mercer County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.