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Counties → Wisconsin

St. Croix County, Wisconsin

Water Systems
164
Population Served
56,107
Total Violations
3,287
865 health-based
PFAS Detected
2
of 3 tested

Violation Analysis

67.7%
Systems with Violations
20.0
Avg Violations per System
26.3%
Health-Based Violations

Water Source Types

GW
50 systems (30%)

PFAS Contamination

3
Systems Tested
2
PFAS Detected
66.7%
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

St. Croix Wisconsin water systems by violation status, EPA SDWIS records.

No violations on record (7) One or more violations (43)

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
Hudson Waterworks 17,635 16 Detected
New Richmond Waterworks 10,824 52 Detected
Baldwin Waterworks 4,440 19 Clean
Somerset Waterworks 2,854 44 -
Hammond Waterworks 1,884 33 -
Roberts Waterworks 1,872 8 -
Woodville Waterworks 1,386 28 -
Glenwood City Waterworks 1,102 25 -
Cedar Lake Speedway-West Well 919 7 -
Cedar Lake Speedway-East Well 919 18 -
WI DNR Willow River Cmpgd - 300 800 0 -
Star Prairie Waterworks 553 61 -
St Croix Natl Golf Course 520 0 -
YMCA Camp St Croix - Dining Hall 400 0 -
WI DNR Willow River Srvc Bldg 350 33 -
WI DNR Willow River Pic 300 4 -
Eau Galle Recreation Area 250 0 -
Nor Lake 250 11 -
Houlton Elementary School 250 14 -
Rivers Edge Cmpgd 210 10 -
Wall Street Village 191 14 -
Houlton MHP LLC 170 158 -
Wilson Waterworks 170 44 -
Country Cove Court LLC 150 37 -
St Croix Co Glen Hills Pk Group Area 150 26 -
St Croix Co Glen Hills Pk Picnic Area 150 19 -
New Richmond Golf Club 150 5 -
Peace Lutheran Church 150 14 -
St Croix Co Glen Hills Pk Cmpgd 150 20 -
Kingdom Hall Jehovahs Witnesses 145 0 -
Baldwin Christian School 137 75 -
Trinity Family Center 136 80 -
Hudson Town Hall 135 0 -
WI DNR Willow River Grp Cmpgd 130 10 -
Travel Centers of America 125 34 -
YMCA Camp St Croix - Bath House 125 0 -
Rivers Edge Restaurant 120 12 -
Bethel Highlands Lutheran Church 120 10 -
Abundant Life Church 110 177 -
Immanuel Evangelical Lutheran Church 100 5 -
Andersen Scout Camp Good Medicine 100 3 -
Andersen Scout Camp Shelter 2 100 2 -
Andersen Scout Camp Adirondack 123 100 7 -
Andersen Scout Camp Master Cabin 100 9 -
Andersen Scout Camp Peterson Cabins 100 4 -
Andersen Scout Camp House 100 8 -
Circle K #474 100 5 -
Badlands Recreation Inc 100 8 -
Rooster's Roadhouse 100 54 -
Big Guys BBQ Roadhouse 100 26 -

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 St. Croix County? ▼
St. Croix County has 3,287 total drinking water violations across 164 water systems, of which 865 are health-based violations. 67.7% of systems have at least one violation.
How many people get water from St. Croix County systems? ▼
Water systems in St. Croix County serve approximately 56,107 people through 164 public water systems.
Has PFAS been detected in St. Croix County water? ▼
Of 3 water systems tested for PFAS in St. Croix County, 2 had PFAS detected (66.7% detection rate).
What types of water sources supply St. Croix County? ▼
Water systems in St. Croix 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. 26.3% of St. Croix 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.