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Counties → Illinois

McDonough County, Illinois

Water Systems
24
Population Served
33,540
Total Violations
2,854
852 health-based
PFAS Detected
3
of 4 tested

Violation Analysis

83.3%
Systems with Violations
118.9
Avg Violations per System
29.9%
Health-Based Violations

Water Source Types

GW
15 systems (63%)
SW
9 systems (38%)

PFAS Contamination

4
Systems Tested
3
PFAS Detected
75.0%
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

McDonough Illinois water systems by violation status, EPA SDWIS records.

No violations on record (4) One or more violations (20)

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
Macomb 15,052 195 Clean
Western Illinois University 8,000 68 Clean
Bushnell 2,972 70 Clean
West Prairie Water Co-Op 2,395 6 -
Colchester 1,395 172 -
Blandinsville 569 49 Clean
Industry 540 29 -
Good Hope 536 40 -
New Salem Pwd 451 97 -
Prairie City 425 152 -
Bardolph 303 219 -
Kiljordan Meadows 282 0 -
Sciota 180 7 -
Victory Baptist Church 75 30 -
Walnut Gr United Methodist Chu 50 59 -
Bushnell Market 50 4 -
Walmart Supercenter 0197 50 0 -
Stratford West Association, Inc. 44 1,590 -
Jerusalem United Methodist Church 40 39 -
Envirofil of Illinois 31 11 -
Macomb Municipal Airport 25 14 -
Hyvee Inc 25 0 -
Just Chillin Ice and Water 25 3 -
Midwest Ice LLC 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 McDonough County? ▼
McDonough County has 2,854 total drinking water violations across 24 water systems, of which 852 are health-based violations. 83.3% of systems have at least one violation.
How many people get water from McDonough County systems? ▼
Water systems in McDonough County serve approximately 33,540 people through 24 public water systems.
Has PFAS been detected in McDonough County water? ▼
Of 4 water systems tested for PFAS in McDonough County, 3 had PFAS detected (75.0% detection rate).
What types of water sources supply McDonough County? ▼
Water systems in McDonough County use GW (15 systems), SW (9 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. 29.9% of McDonough 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.