PlainWater
Counties → Illinois

McLean County, Illinois

Water Systems
90
Population Served
171,235
Total Violations
10,265
1,742 health-based
PFAS Detected
1
of 4 tested

Violation Analysis

76.7%
Systems with Violations
114.1
Avg Violations per System
17.0%
Health-Based Violations

Water Source Types

GW
41 systems (46%)
SW
9 systems (10%)

PFAS Contamination

4
Systems Tested
1
PFAS Detected
25.0%
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

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

No violations on record (2) One or more violations (48)

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
Bloomington 77,610 61 Detected
Normal 52,736 3 Clean
Illinois State University-Normal 6,600 100 Clean
Le Roy 3,498 105 Clean
Heyworth 2,853 5 -
Lexington 1,930 24 -
Hudson 1,847 88 -
Bloomington Township Pwd West Phase 1,800 17 -
Chenoa 1,785 127 -
Gridley 1,411 21 -
Hilltop MHP 1,360 92 -
Downs 1,201 196 -
Danvers 1,183 502 -
Colfax 989 104 -
Olympia School 918 632 -
Bloomington Township Pwd-Crestwicke 900 12 -
Mc Lean 791 38 -
Saybrook 679 278 -
Stanford 600 14 -
Carlock 562 203 -
Funks Grove Hwy Rest Area 500 20 -
North Meadow Village MHP 495 55 -
Towanda 480 63 -
Cornerstone Christian Academy 475 99 -
Timber Pointe - the Lodge 400 33 -
Blm Gw MHP, LLC 390 50 -
Bellflower 343 127 -
Meadows of Bloomington MHP 343 82 -
Victory Christian Center 325 853 -
Arrowsmith 315 58 -
Comlara Park Beach Well 300 24 -
Comlara Park Hq 300 26 -
Comlara Park Campground 300 24 -
Hazy Hills Golf Course 257 0 -
Willow Creek North MHP 250 81 -
Indian Creek Homeowners and Water Assn. 210 27 -
Ellsworth 200 162 -
Spin Lake Homeowners Association, Inc. 200 134 -
Leroy Country Club 200 10 -
Kamp Komfort 200 21 -
Indian Springs Recreation Assn 200 6 -
Freedom Oil Company (125666) 200 6 -
New Horizon Christian Church 200 0 -
Colonial Meadows Water Company 190 376 -
Anchor 160 61 -
Cooksville 157 389 -
Timber Pointe Oc-Sterns Lodge 150 30 -
Bloomington First Church 150 7 -
Meadows Mennonite Home 140 140 -
Timber Pointe - Pool 140 22 -

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 McLean County? ▼
McLean County has 10,265 total drinking water violations across 90 water systems, of which 1,742 are health-based violations. 76.7% of systems have at least one violation.
How many people get water from McLean County systems? ▼
Water systems in McLean County serve approximately 171,235 people through 90 public water systems.
Has PFAS been detected in McLean County water? ▼
Of 4 water systems tested for PFAS in McLean County, 1 had PFAS detected (25.0% detection rate).
What types of water sources supply McLean County? ▼
Water systems in McLean County use GW (41 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. 17.0% of McLean 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.