PlainWater
Counties → Wisconsin

Oneida County, Wisconsin

Water Systems
346
Population Served
40,522
Total Violations
4,836
792 health-based
PFAS Detected
1
of 1 tested

Violation Analysis

65.6%
Systems with Violations
14.0
Avg Violations per System
16.4%
Health-Based Violations

Water Source Types

GW
50 systems (14%)

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

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

No violations on record (22) One or more violations (28)

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
Rhinelander Water & Wastewater 8,234 333 Detected
Lakeland Sanitary Dist 1 2,381 20 -
Minocqua Hazelhurst Elem Sch 650 30 -
Three Lakes Sanitary District 500 33 -
Scouting America Camp Tesomas Program Center and Dining Hall 500 0 -
WI DNR Clear Lk Cmpgd 24 450 0 -
WI DNR Clear Lk Cmpgd 23 450 4 -
WI DNR Clear Lk Cmpgd 10 450 0 -
WI DNR Clear Lk Cmpgd 9 450 0 -
WI DNR Clear Lk Cmpgd 8 450 0 -
WI DNR Clear Lk Cmpgd 7 450 0 -
Pelican Elementary School 353 85 -
Honey Rock Camp Chrouser Center 350 2 -
Camp Luther Shower House Well 350 0 -
Northernaire Sanitary District 315 56 -
Wildwood Wildlife Park 300 0 -
Rock of Ages Lutheran Church 300 4 -
Holy Family Catholic Church 300 0 -
Wildwood Wildlife Park Jambo Hut 300 5 -
WI DNR Clear Lk Cmpgd Shower 300 0 -
Pines Event Center The 280 14 -
Willow Haven 260 30 -
Marshfield Clinic Woodruff Center 260 8 -
Camp Agawak Main 250 10 -
Chippewa Ranch Camp Mess Hall 225 3 -
White Stag Inn 200 19 -
WI DNR Buffalo Lk Cmpgd 18 200 0 -
WI DNR Clear Lk Pic 14 200 5 -
Holiday Acres Main 200 10 -
Grace Foursquare Church 200 0 -
Camp Kawaga 3 Field Bubbler 200 6 -
Camp Kawaga 1 Bide a Wee 200 9 -
West Bay Cmpng Rsrt Main Bldg 200 4 -
Camp Kawaga 7 Mess Hall 200 0 -
Camp Kawaga 6 Porcupine 200 4 -
Camp Kawaga 5 Crows Nest 200 0 -
Honey Rock Camp Lower Plaza 200 24 -
Scouting America Camp Tesomas East Shower House 200 0 -
Scouting America Camp Tesomas Senior Staff Housing 200 0 -
Scouting America Camp Tesomas West Camper Shower House 200 0 -
Three Lakes Town Market 200 0 -
Spangs Italian Restaurant 200 12 -
Camp Deerhorn 1 Laundry 190 4 -
Camp Deerhorn 3 Bath House 190 4 -
Camp Deerhorn 2 Office 190 0 -
Crescent Lake Bible Camp 175 8 -
Camp Horseshoe West Shower Building 160 4 -
Camp Horseshoe Main Well 160 0 -
Camp Horseshoe Complex Court 160 0 -
Pelican Lake Campground LLC 150 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 Oneida County? ▼
Oneida County has 4,836 total drinking water violations across 346 water systems, of which 792 are health-based violations. 65.6% of systems have at least one violation.
How many people get water from Oneida County systems? ▼
Water systems in Oneida County serve approximately 40,522 people through 346 public water systems.
Has PFAS been detected in Oneida County water? ▼
Of 1 water systems tested for PFAS in Oneida County, 1 had PFAS detected (100.0% detection rate).
What types of water sources supply Oneida County? ▼
Water systems in Oneida 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. 16.4% of Oneida 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.