PlainWater
Counties → Wisconsin

Iowa County, Wisconsin

Water Systems
77
Population Served
25,946
Total Violations
2,450
610 health-based
PFAS Detected
0
of 2 tested

Violation Analysis

81.8%
Systems with Violations
31.8
Avg Violations per System
24.9%
Health-Based Violations

Water Source Types

GW
50 systems (65%)

PFAS Contamination

2
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

Iowa 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
Dodgeville Waterworks 4,583 17 Clean
Mineral Point Waterworks 2,487 93 -
House on the Rock 2,025 69 -
Barneveld Waterworks 1,258 35 -
Arena Waterworks 877 34 Clean
Highland Waterworks 842 28 -
American Players Theatre -Gateway 821 6 -
American Players Theatre Patron 810 0 -
Iowa Grant Schools 730 22 -
Ridgeway Waterworks 690 245 -
Avoca Waterworks 637 88 -
Linden Waterworks 547 23 -
Farm & Fleet of Dodgeville 540 39 -
WI DNR Gov Dodge Cox Hollow Picnic 500 22 -
WI DNR Blue Mound Upper Well 500 30 -
House on the Rock Resort 470 85 -
Cobb Waterworks 458 137 -
WI DNR Gov Dodge Twin Valley 200 375 16 -
Tower Junction 320 11 -
House on the Rock Winter Well 315 0 -
Rewey Waterworks 290 161 -
Hollandale Waterworks 283 22 -
WI DNR Blue Mound Aquatic Center 265 0 -
WI DNR Gov Dodge Cox Hollow Open Camp 250 73 -
WI DNR Blue Mound Lower Well 250 23 -
WI DNR Blue Mound Fobm Shelter 250 13 -
WI DNR Gov Dodge Twin Valley 300 Camp 225 12 -
WI DNR Gov Dodge Group Efgh 200 14 -
WI DNR Gov Dodge Office 200 8 -
WI DNR Gov Dodge Twin Valley Picnic 200 21 -
WI DNR Gov Dodge Cox Hollow Wooded 200 15 -
Wood Violet Recovery 200 54 -
Don Q Inn Hotel 174 0 -
Frank Lloyd Wright Visitor Center & Cafe 164 4 -
Blackhawk Lake Office & Nature Center 160 11 -
HI Point Steak House 150 32 -
Blackhawk Lake Camping Area 150 12 -
American Players Theatre -Touchstone 149 0 -
Taliesin - Main Building 137 123 -
Americinn 112 31 -
Taliesin Hillside School 110 16 -
Edmund TN of Linden San Dist 1 110 63 -
WI DNR Tower Hill Park 103 14 -
Hecks Marketplace 102 11 -
Bethel Horizons Indian Rock Campground 100 0 -
Bethel Horizons Main Site 100 5 -
Blackhawk Lake Beach 100 23 -
Deer Valley Golf Course 93 0 -
Silver Star 85 24 -
Compeer Financial 84 16 -

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 Iowa County? ▼
Iowa County has 2,450 total drinking water violations across 77 water systems, of which 610 are health-based violations. 81.8% of systems have at least one violation.
How many people get water from Iowa County systems? ▼
Water systems in Iowa County serve approximately 25,946 people through 77 public water systems.
Has PFAS been detected in Iowa County water? ▼
Of 2 water systems tested for PFAS in Iowa County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Iowa County? ▼
Water systems in Iowa 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. 24.9% of Iowa 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.