PlainWater
Counties → Wisconsin

Washington County, Wisconsin

Water Systems
268
Population Served
131,895
Total Violations
7,862
1,323 health-based
PFAS Detected
6
of 8 tested

Violation Analysis

75.7%
Systems with Violations
29.3
Avg Violations per System
16.8%
Health-Based Violations

Water Source Types

GW
50 systems (19%)

PFAS Contamination

8
Systems Tested
6
PFAS Detected
75.0%
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

Washington Wisconsin water systems by violation status, EPA SDWIS records.

No violations on record (8) One or more violations (42)

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
West Bend Waterworks 31,752 291 Detected
Germantown Water Utility 20,027 329 Clean
Hartford Waterworks 15,805 258 Detected
Jackson Waterworks 7,844 20 Clean
Slinger Water Utility 5,659 29 Detected
Kewaskum Waterworks 4,309 137 Detected
Cabelas - Richfield 3,931 0 Clean
Kwik Trip #1013 2,253 4 -
Fox Bros Piggly Wiggly Inc - Hubertus 1,314 15 -
Allenton Sanitary District 860 47 -
Discalced Carmelites & Holy Hill Cafe 823 12 -
Pioneer Plaza 808 1 -
The Columbian 752 7 -
Rstore #4517 720 6 -
Caseys General Store #3793 715 0 -
St Johns Lutheran School 710 767 -
Kettle Moraine Lutheran Hs 585 132 -
Amy Belle School 522 36 -
Addison Elementary School 515 6 -
Sunburst Ski Area - Maint Shop 510 6 -
Lazy Days Area C & Lower D 506 3 -
Sunburst Ski Area 500 6 -
Sunburst Snowtubing Area 500 0 -
Daniel Boone Conservation League Club House 453 8 -
St Gabriel School-Parish 438 20 -
Fox & Hounds Restaurant - Kitchen 415 4 -
Fox & Hounds Restaurant - Bar 415 12 -
Richfield Middle School 410 11 -
Casa Tequila 410 2 -
Friess Lake Elementary School 407 145 -
Erin School 405 37 -
Kenickys Public House 404 26 -
Scenic View Country Club 403 67 -
Rockfield School 375 24 -
Minikani YMCA Camp - Halquist Family Lodge 364 0 -
Shepherd of the Hills Church - New 364 0 -
Cedar Lake Home 5 330 118 -
Weasler Engineering 325 188 -
Country Mart 320 5 -
Minikani YMCA Camp - Pioneer Unit 309 7 -
Minikani YMCA Camp - Trail Blazer 309 7 -
Minikani YMCA Camp - Dining Lodge 309 7 -
Minikani YMCA Camp - Horse Barn 309 0 -
Minikani YMCA Camp - Explorer Unit 309 4 -
West Bend Lakes Golf & Recreation 307 13 -
Hartford Town Hall 305 0 -
Richfield Heritage Park and Municipal Shop 304 0 -
Richfield Heritage Park - Concession Stand 304 4 -
Camp Awana 3 Canteen Well 302 2 -
Camp Awana 2 Hilltop Well 302 2 -

Other Counties in Wisconsin

Milwaukee County
85 systems · 953,104 served · 2,602 violations
Dane County
301 systems · 517,785 served · 7,065 violations
Waukesha County
590 systems · 322,690 served · 24,998 violations
Brown County
149 systems · 246,872 served · 2,891 violations
Outagamie County
107 systems · 179,535 served · 1,999 violations
Racine County
195 systems · 179,476 served · 10,597 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Washington County? ▼
Washington County has 7,862 total drinking water violations across 268 water systems, of which 1,323 are health-based violations. 75.7% of systems have at least one violation.
How many people get water from Washington County systems? ▼
Water systems in Washington County serve approximately 131,895 people through 268 public water systems.
Has PFAS been detected in Washington County water? ▼
Of 8 water systems tested for PFAS in Washington County, 6 had PFAS detected (75.0% detection rate).
What types of water sources supply Washington County? ▼
Water systems in Washington County use GW (50 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. 16.8% of Washington 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.