PlainWater
Counties → Wisconsin

Oconto County, Wisconsin

Water Systems
203
Population Served
20,416
Total Violations
3,478
914 health-based
PFAS Detected
1
of 1 tested

Violation Analysis

82.8%
Systems with Violations
17.1
Avg Violations per System
26.3%
Health-Based Violations

Water Source Types

GW
50 systems (25%)

PFAS Contamination

1
Systems Tested
1
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

Oconto 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
Oconto Waterworks 4,610 33 Clean
Oconto Falls Waterworks 2,892 21 -
Gillett Waterworks 1,264 48 -
Lena Waterworks 585 25 -
Sunnyside Elementary Sch 575 169 -
Suring Waterworks 559 62 -
Abrams Elementary School 400 20 -
Lakewood Supervalu 335 0 -
McCauslin Brook Golf Course Clubhouse 220 3 -
Holiday Inn Supper Club 220 9 -
Bear Paw Scout Camp Dining Hall 200 0 -
Bear Paw Scout Camp Oasis 200 0 -
Bear Paw Scout Camp Main Shower 200 4 -
Bear Paw Scout Camp Fox 200 9 -
Bear Paw Scout Camp Joannes 200 0 -
Fairview School 143 16 -
U S F S Boot Lk N K5 110 65 -
U S F S Boot Lk S K6 110 4 -
Camp U Nah Li Ya Dining Hall 110 0 -
Camp U Nah Li Ya East Bath House 110 15 -
Northern D Lites Drive Inn 110 23 -
Karlas Kountry Kitchen 110 5 -
Echo Valley Resort Entrance 110 24 -
Crystal Waters Condominiums 110 4 -
Northern Grace Youth Camp 110 35 -
Mulligans Sports Bar 110 9 -
Luigi Pizza Palace II 110 26 -
Timberlea Drive Inn 110 0 -
Chute Pond Pk Fieldhouse 110 5 -
Dawg Haus Saloon 110 76 -
Chute Pond Pk Fisher Memorial 110 13 -
Chute Pond Pk Entrance 110 4 -
Chute Inn Family Restaurant 110 20 -
Maiden Lake Supper Club 110 1 -
Echo Valley Resort Hill 110 8 -
Evergreen Park 100 49 -
Gregg Young Cdjr Abrams 90 0 -
Rustic Acres MHP 90 81 -
Camp Nan a Bo Sho Med Bldg 90 12 -
Nicolet Plastics LLC 80 23 -
Oconto Falls MHP 80 70 -
Allen Estates LLC 75 14 -
Zahn Farms 74 0 -
Building Blocks Childcare Center 70 193 -
Primal Eats LLC 70 0 -
Camp Norwid Kitchen 70 14 -
St Johns Lutheran Sch 60 26 -
Dollar General 23863 Lakewood 55 0 -
41/141 Dino Stop 50 8 -
Lakewood Assisted Living Inc 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 Oconto County? ▼
Oconto County has 3,478 total drinking water violations across 203 water systems, of which 914 are health-based violations. 82.8% of systems have at least one violation.
How many people get water from Oconto County systems? ▼
Water systems in Oconto County serve approximately 20,416 people through 203 public water systems.
Has PFAS been detected in Oconto County water? ▼
Of 1 water systems tested for PFAS in Oconto County, 1 had PFAS detected (100.0% detection rate).
What types of water sources supply Oconto County? ▼
Water systems in Oconto 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 Oconto 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.