PlainWater
Counties → North Dakota

McHenry County, North Dakota

Water Systems
7
Population Served
2,316
Total Violations
432
132 health-based
PFAS Detected
0
of 0 tested

Violation Analysis

100.0%
Systems with Violations
61.7
Avg Violations per System
30.6%
Health-Based Violations

Water Source Types

GW
7 systems (100%)

Compliance Snapshot

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

No violations on record (0) One or more violations (7)

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
Velva City Of 1,084 32 -
Towner City Of 479 18 -
Drake City Of 275 12 -
Granville City Of 241 39 -
Upham City Of 130 65 -
Karlsruhe City Of 82 235 -
Towner State Nursery 25 31 -

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 McHenry County? ▼
McHenry County has 432 total drinking water violations across 7 water systems, of which 132 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from McHenry County systems? ▼
Water systems in McHenry County serve approximately 2,316 people through 7 public water systems.
Has PFAS been detected in McHenry County water? ▼
No PFAS testing data is available for water systems in McHenry County.
What types of water sources supply McHenry County? ▼
Water systems in McHenry County use GW (7 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. 30.6% of McHenry 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.