PlainWater
Counties → Illinois

Sangamon County, Illinois

Water Systems
68
Population Served
183,628
Total Violations
1,245
344 health-based
PFAS Detected
1
of 7 tested

Violation Analysis

58.8%
Systems with Violations
18.3
Avg Violations per System
27.6%
Health-Based Violations

Water Source Types

SW
34 systems (50%)
GW
16 systems (24%)

PFAS Contamination

7
Systems Tested
1
PFAS Detected
14.3%
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

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

No violations on record (13) One or more violations (37)

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
Springfield 117,444 23 Detected
Chatham 16,423 39 Clean
Curran-Gardner Township Pwd 6,651 12 Clean
Williamsville 6,198 8 Clean
Auburn 4,574 51 Clean
Riverton 4,279 62 Clean
Rochester 3,856 46 Clean
Pawnee 2,739 36 -
Dawson 2,375 58 -
Jerome 1,600 52 -
Pleasant Plains 1,508 18 -
Grandview 1,405 26 -
New Berlin 1,380 241 -
Divernon 1,172 50 -
Mechanicsburg-Buffalo Water Commission 1,170 80 -
Illiopolis 1,037 68 -
Ej Water-Sangchris 1,025 43 -
Grand Valley Village MHP 912 34 -
Round Prairie Water Coop 813 6 -
Loami 812 27 -
Sugar Crk Pwd 754 20 -
Thayer 721 93 -
Woodland Acres MHP 464 8 -
Oakwood Estates 420 9 -
Cottonwood Cove MHP 358 0 -
Forrest Park MHP 352 0 -
Pheasant Run MHP 350 10 -
Bissell Village Mhc 220 8 -
Northbrook Mhc 220 4 -
Church of the Nazarene (142588) 200 4 -
Deerwood Estates 176 0 -
Milton Manor MHP 154 0 -
Westwood Place 152 0 -
Gaslite Court Mhc 148 0 -
South Sangamon Water Commission 134 27 -
Ridge Village MHP 120 1 -
Park Ridge Mhc 116 17 -
Scottsdale Mhc 114 0 -
Sangchris State Park Office (10066) 100 5 -
The Gym of Springfield 100 0 -
Edgewood Mobile Home Court (Mhc) 92 5 -
Linden Manor MHP 84 0 -
Patch Place Mhc 47 4 -
Westwood 44 0 -
Kents Iga Riverton 40 0 -
United Regional Water Coop 25 8 -
Springfield KOA Kampground Inc 25 25 -
Carwash City 25 5 -
Meijer Springfield 25 0 -
Schnuck Sangamon Springfield 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 Sangamon County? ▼
Sangamon County has 1,245 total drinking water violations across 68 water systems, of which 344 are health-based violations. 58.8% of systems have at least one violation.
How many people get water from Sangamon County systems? ▼
Water systems in Sangamon County serve approximately 183,628 people through 68 public water systems.
Has PFAS been detected in Sangamon County water? ▼
Of 7 water systems tested for PFAS in Sangamon County, 1 had PFAS detected (14.3% detection rate).
What types of water sources supply Sangamon County? ▼
Water systems in Sangamon County use SW (34 systems), GW (16 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. 27.6% of Sangamon 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.