PlainWater
Counties → Wisconsin

Winnebago County, Wisconsin

Water Systems
152
Population Served
151,482
Total Violations
1,690
591 health-based
PFAS Detected
0
of 6 tested

Violation Analysis

67.1%
Systems with Violations
11.1
Avg Violations per System
35.0%
Health-Based Violations

Water Source Types

GW
45 systems (30%)
SW
5 systems (3%)

PFAS Contamination

6
Systems Tested
0
PFAS Detected
0.0%
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

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

No violations on record (11) One or more violations (39)

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
Oshkosh Waterworks 63,000 20 Clean
Neenah Waterworks 27,506 46 Clean
Fox Crossing Utilities West 18,000 6 Clean
Menasha Elec & Water Util 15,144 18 Clean
Fox Crossing Utilities East 10,927 7 Clean
Algoma TN Sanitary Dist 1 3,935 0 -
Omro Waterworks 3,629 8 Clean
Winneconne Waterworks 2,502 169 -
J J Keller Vinland Plant 520 4 -
Lakeside Elementary School 315 24 -
N & M Transfer Company Well 3 175 12 -
Advanced Manufacturing Tech Ctr 150 0 -
Countryside Christian Church 125 0 -
Oshkosh Country Club Clubhouse 110 10 -
Oinks 110 38 -
Haases Supper Club 110 13 -
Cattails Supper Club 110 10 -
Winagamie Golf Course 110 10 -
Winklers Westward Ho 110 9 -
Ridgeway Bp 107 33 -
Fox River Valley Ethanol LLC 100 102 -
Bare Bones 100 0 -
J J Keller North Park Office 90 4 -
Quality Paint & Coatings Oshkosh 90 6 -
Winnebago Area Sanitary District 90 1 -
Rolling Meadows of Larsen LLC 85 68 -
Willow Pines Mfd Home Community 70 41 -
Kimberly-Clark Corporation Kcpx Facility 70 0 -
Team Winnebagoland 65 0 -
Acton Academy Main 64 1 -
Wsi 8520 & 8525 Martin Dr 60 0 -
Great Lakes Veterinary Clinic 59 0 -
Winne Y Co 50 14 -
Utica Golf Club 50 14 -
We Community Church Eureka 50 59 -
Far Vu Golf Course 50 1 -
Century Elm Supper Club 50 27 -
Winchester, The 50 8 -
Winchester Hills Golf Course 50 0 -
YMCA Tennis Ctr 50 6 -
Jesuit Retreat House Chapel 50 0 -
We Community Church Waukau 50 21 -
Winnebago Co Pk Shelter 2 50 6 -
Winnebago Co Pk Shelter 1 50 6 -
Winnebago Co Pk Shelter 3 50 7 -
Winnebago Co Pk Shelter 4 50 6 -
Winnebago Co Pk Bathhouse 50 10 -
Jimmies White House Inn 50 5 -
Gala Resort & Cmpgd 50 14 -
Ridgeway Country Club Clubhouse 50 0 -

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 Winnebago County? ▼
Winnebago County has 1,690 total drinking water violations across 152 water systems, of which 591 are health-based violations. 67.1% of systems have at least one violation.
How many people get water from Winnebago County systems? ▼
Water systems in Winnebago County serve approximately 151,482 people through 152 public water systems.
Has PFAS been detected in Winnebago County water? ▼
Of 6 water systems tested for PFAS in Winnebago County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Winnebago County? ▼
Water systems in Winnebago County use GW (45 systems), SW (5 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. 35.0% of Winnebago 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.