PlainWater
Counties → Wisconsin

Sauk County, Wisconsin

Water Systems
199
Population Served
68,432
Total Violations
4,499
936 health-based
PFAS Detected
1
of 5 tested

Violation Analysis

58.8%
Systems with Violations
22.6
Avg Violations per System
20.8%
Health-Based Violations

Water Source Types

GW
50 systems (25%)

PFAS Contamination

5
Systems Tested
1
PFAS Detected
20.0%
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

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

No violations on record (17) One or more violations (33)

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
Baraboo Waterworks 12,703 366 Clean
Reedsburg Waterworks 9,984 36 Detected
Ho Chunk Casino 5,486 0 Clean
Prairie Du Sac Waterworks 4,006 55 Clean
Sauk City Waterworks 3,518 11 Clean
Lake Delton Waterworks 2,914 14 -
Spring Green Waterworks 1,626 104 -
West Baraboo Waterworks 1,414 6 -
WI DNR Devils Lake North Shore 1,115 56 -
WI DNR Devils Lake East Campground 1,102 68 -
WI DNR Devils Lake South Picnic Area 900 46 -
Plain Waterworks 792 19 -
WI DNR Devils Lake Quartzite Campground 615 0 -
North Freedom Waterworks 589 25 -
Devils Head Resort 535 109 -
WI DNR Mirror Lake Office/Shop 505 13 -
WI DNR Mirror Lake Sandstone Ridge 501 5 -
WI DNR Devils Lake Upper Ice Age Campground 500 27 -
Bluffview Sanitary District 450 32 -
Merrimac Waterworks 440 85 -
International Crane Foundation Gateway Visitors 420 0 -
St Boniface Catholic Church 400 0 -
La Valle Waterworks 365 81 -
Pioneer Park Comfort Sta 1 305 0 -
Pioneer Park Comfort Sta 2 305 0 -
Loganville Waterworks 300 41 -
Spring Green Estates 300 81 -
Rock Springs Waterworks 292 48 -
Yogi Bears Jellystone Park #1 Comfort Station 256 3 -
Yogi Bears Jellystone Park #2 Comfort Station 256 7 -
Yogi Bears Jellystone Park #3 Comfort Station 256 16 -
WI Dells KOA Campground Lower Well 255 2 -
WI Dells KOA Campground Upper Well 255 0 -
WI DNR Devils Lake South Shore Shelter 255 15 -
Ironton Waterworks 253 135 -
Chapparal RV Resort LLC 250 0 -
Christmas Mt Clubhouse 245 0 -
WI DNR Mirror Lake Cliffwood 225 12 -
Tumbled Rock Brewery & Kitchen 210 0 -
Country Bumpkin Farm Market 208 0 -
Ishnala Supper Club 205 0 -
Pioneer Park Pool 205 0 -
Pioneer Park NE Corner 205 0 -
Devils Head Resort Highrise 205 5 -
Chapparal Campground Lower Well 203 0 -
Natures Touch Campground Shower 202 0 -
Wisconsin Riverside Campground 201 21 -
Dell Pines Campground Well 1 200 0 -
River Valley Mobil 200 7 -
Sauk Co Lake Redstone County Park Beach 200 10 -

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 Sauk County? ▼
Sauk County has 4,499 total drinking water violations across 199 water systems, of which 936 are health-based violations. 58.8% of systems have at least one violation.
How many people get water from Sauk County systems? ▼
Water systems in Sauk County serve approximately 68,432 people through 199 public water systems.
Has PFAS been detected in Sauk County water? ▼
Of 5 water systems tested for PFAS in Sauk County, 1 had PFAS detected (20.0% detection rate).
What types of water sources supply Sauk County? ▼
Water systems in Sauk 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. 20.8% of Sauk 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.