PlainWater
Counties → Illinois

Jo Daviess County, Illinois

Water Systems
49
Population Served
18,628
Total Violations
2,305
129 health-based
PFAS Detected
0
of 3 tested

Violation Analysis

81.6%
Systems with Violations
47.0
Avg Violations per System
5.6%
Health-Based Violations

Water Source Types

GW
49 systems (100%)

PFAS Contamination

3
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

Jo Daviess Illinois water systems by violation status, EPA SDWIS records.

No violations on record (9) One or more violations (40)

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
Galena 3,308 124 Clean
Prairie Path Water Company-Galena 2,294 76 Clean
Stockton 1,728 72 -
East Dubuque 1,565 117 -
Warren 1,323 25 -
Prairie Path Water Company-Apple Canyon 931 17 -
Hanover 863 27 Clean
Elizabeth 802 22 -
Prairie Path Water-Bahl Water Company 700 131 -
Mount Vernon Association Inc 438 17 -
Scales Mound 436 35 -
Apple River 347 218 -
The Hilltop at Menominee 300 2 -
Galena Cellars Vineyard 300 4 -
Rocky Waters Vineyard 300 0 -
Frentress Lake 233 8 -
Lacoma Golf Club 200 0 -
East Dubuque Nitrogen Fertilizers 165 26 -
Canyon Camp Boy Scouts 150 10 -
Kolb Lena Cheese Company 150 415 -
Fergedaboudit Vineyard and Winery 150 1 -
Longhollow Point HOA 125 20 -
Palace Campground - Office 100 11 -
Galena Golf Club 100 1 -
The Nora Bar 100 1 -
Swiss Inn 100 0 -
Apple River Canyon St Park-Canyon Ridge 100 7 -
Longhollow Scenic Tower Rest Area 100 0 -
Woodbine Bend Golf Course Club 100 1 -
Goldmoor Inn 100 0 -
Chestnut Mountain Resort - Edelweiss 96 5 -
Wienen Estates 95 238 -
Blanding Landing - Comfort Station 75 4 -
Blanding Landing - Campground Well 75 5 -
Palace Campground - Shower Bldg 75 11 -
Massbach Ridge Winery 60 1 -
Apple River Canyon St Park-Devils Hollow 50 2 -
Apple River Canyon St Park-Site Mgr 50 2 -
Grant Hills Motel - Pool 50 13 -
The High Country 50 9 -
Sullivans Foods (146969) 50 0 -
Walmart Galena 50 0 -
Tammys Piggly Wiggly 50 0 -
Chestnut Mountain Resort - Chalet Well 49 4 -
The Country Experience 40 7 -
River Ridge School 30 594 -
Grant Hills Motel - Office 25 11 -
Canyon Lake Services Inc 25 11 -
Vel Terra Ranch Campground 25 0 -

Other Counties in Illinois

Cook County
427 systems · 5,304,996 served · 21,728 violations
DuPage County
207 systems · 861,775 served · 15,779 violations
Lake County
540 systems · 719,035 served · 33,311 violations
Will County
330 systems · 622,572 served · 37,818 violations
Kane County
191 systems · 592,544 served · 12,844 violations
McHenry County
307 systems · 271,051 served · 11,554 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Jo Daviess County? ▼
Jo Daviess County has 2,305 total drinking water violations across 49 water systems, of which 129 are health-based violations. 81.6% of systems have at least one violation.
How many people get water from Jo Daviess County systems? ▼
Water systems in Jo Daviess County serve approximately 18,628 people through 49 public water systems.
Has PFAS been detected in Jo Daviess County water? ▼
Of 3 water systems tested for PFAS in Jo Daviess County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Jo Daviess County? ▼
Water systems in Jo Daviess County use GW (49 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. 5.6% of Jo Daviess 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.