PlainWater
Counties → Illinois

Macoupin County, Illinois

Water Systems
37
Population Served
45,357
Total Violations
3,529
1,809 health-based
PFAS Detected
2
of 6 tested

Violation Analysis

81.1%
Systems with Violations
95.4
Avg Violations per System
51.3%
Health-Based Violations

Water Source Types

SW
34 systems (92%)
GW
3 systems (8%)

PFAS Contamination

6
Systems Tested
2
PFAS Detected
33.3%
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

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

No violations on record (7) One or more violations (30)

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
Carlinville 6,598 243 Clean
Staunton 5,756 201 Detected
Brighton 5,041 89 Detected
Gillespie 3,737 275 Clean
Virden 3,274 30 Clean
Mount Olive 2,193 269 Clean
Girard 1,885 52 -
Central Macoupin County RWD 1,883 160 -
Bunker Hill 1,760 10 -
Benld 1,612 87 -
Nilwood 1,394 85 -
Otter Lake Water Commission 1,318 71 -
Lake Williamson Christian Center 1,250 117 -
South Palmyra Water Commission 838 39 -
Kaho Public Water District 785 34 -
Scottville Rural Water Company, Inc. 695 139 -
Shipman 656 113 -
Palmyra 605 73 -
Sawyerville 578 106 -
Dorchester 562 79 -
Wilsonville 536 122 -
Medora 484 45 -
White City 433 198 -
Mount Clare 311 56 -
Royal Lakes 235 111 -
Modesto 182 66 -
Hettick 174 247 -
Chesterfield 170 73 -
Eagarville 127 116 -
Palmyra-Modesto Water Commission 110 223 -
J's Snack Shack 25 0 -
Walmart Supercenter 0334 Carlinville 25 0 -
Twice the Ice Carlinville 25 0 -
Twice the Ice Staunton 25 0 -
Polar Ice and Water - Gillespie 25 0 -
Magic Wand Car Wash Benld 25 0 -
Wilsonville Water Ice Vending 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 Macoupin County? ▼
Macoupin County has 3,529 total drinking water violations across 37 water systems, of which 1,809 are health-based violations. 81.1% of systems have at least one violation.
How many people get water from Macoupin County systems? ▼
Water systems in Macoupin County serve approximately 45,357 people through 37 public water systems.
Has PFAS been detected in Macoupin County water? ▼
Of 6 water systems tested for PFAS in Macoupin County, 2 had PFAS detected (33.3% detection rate).
What types of water sources supply Macoupin County? ▼
Water systems in Macoupin County use SW (34 systems), GW (3 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. 51.3% of Macoupin 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.