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LAKEWOOD

PWS ID: IL1115760 · LAKEWOOD, Illinois 60014

LAKEWOOD serves 4,267 people in LAKEWOOD, Illinois using Groundwater water sources. It has 242 recorded EPA violations, including 13 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: LAKEWOOD

LAKEWOOD is a local-owned community water system that delivers drinking water to 4,267 residents in LAKEWOOD, Illinois (McHenry County) through 1,107 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 242 total violations for this system , of which 13 (5%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 212 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 25 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Illinois, EPA tracks 5,117 public water systems serving 12,576,876 people, with 355,322 cumulative violations and 52,932 health-based violations on record. About 81% of systems in the state carry at least one violation, and state-wide the average per system is 69.4 violations. LAKEWOOD's 242 violations sit above the Illinois average. Statewide, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
4,267
Total Violations
242
Health-Based Violations
13
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
1,107
County
McHenry
School/Daycare
No
MCL Violations
13
Monitoring Violations
212
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 25 2010
Fluoride MCL 13 1985
cis-1,2-Dichloroethylene MR 10 2023
Xylenes, Total MR 10 2023
o-Dichlorobenzene MR 10 2023
p-Dichlorobenzene MR 10 2023
1,1-Dichloroethylene MR 10 2023
trans-1,2-Dichloroethylene MR 10 2023
1,1,1-Trichloroethane MR 10 2023
1,2-Dichloropropane MR 10 2023
CHLOROBENZENE MR 10 2023
Ethylbenzene MR 10 2023
Carbon tetrachloride MR 10 2023
Tetrachloroethylene MR 10 2023
Benzene MR 10 2023
Toluene MR 10 2023
Styrene MR 10 2023
1,2-Dichloroethane MR 10 2023
Trichloroethylene MR 10 2023
Chlorine MR 4 2010
1,2,4-Trichlorobenzene MR 4 2023
DICHLOROMETHANE MR 4 2023
1,1,2-Trichloroethane MR 4 2023
Consumer Confidence Rule Other 3 2025
Public Notice Other 2 2024
Gross Alpha, Excl. Radon and U MR 1 1977

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for LAKEWOOD.

Federal Source of Truth

EPA SDWIS — Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID IL1115760 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Illinois Drinking Water Authority

Illinois EPA — Bureau of Water is the primacy agency that licenses and inspects LAKEWOOD under EPA-delegated authority.

Open IL regulator portal

Source: Illinois EPA — Bureau of Water

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Consumer Confidence Rule Other 3 SDWIS / IL1115760 / 7000
2024 Public Notice Other 2 SDWIS / IL1115760 / 7500
2023 cis-1,2-Dichloroethylene MR 10 SDWIS / IL1115760 / 2380
2023 Xylenes, Total MR 10 SDWIS / IL1115760 / 2955
2023 o-Dichlorobenzene MR 10 SDWIS / IL1115760 / 2968
2023 p-Dichlorobenzene MR 10 SDWIS / IL1115760 / 2969
2023 1,1-Dichloroethylene MR 10 SDWIS / IL1115760 / 2977
2023 trans-1,2-Dichloroethylene MR 10 SDWIS / IL1115760 / 2979
2023 1,1,1-Trichloroethane MR 10 SDWIS / IL1115760 / 2981
2023 1,2-Dichloropropane MR 10 SDWIS / IL1115760 / 2983
2023 CHLOROBENZENE MR 10 SDWIS / IL1115760 / 2989
2023 Ethylbenzene MR 10 SDWIS / IL1115760 / 2992
2023 Carbon tetrachloride MR 10 SDWIS / IL1115760 / 2982
2023 Tetrachloroethylene MR 10 SDWIS / IL1115760 / 2987
2023 Benzene MR 10 SDWIS / IL1115760 / 2990

How LAKEWOOD Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric LAKEWOOD Illinois avg Federal benchmark
Total violations 242 69.4 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 13 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 40.9% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 4,267 2,458 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 5,117 regulated public water systems in Illinois.

Federal MCL reference — Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is LAKEWOOD water safe to drink? ▼
LAKEWOOD (PWS ID: IL1115760) has 242 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 4,267 people using Groundwater sources.
How many people does LAKEWOOD serve? ▼
LAKEWOOD serves 4,267 people in LAKEWOOD, Illinois. It is a Local-owned system using Groundwater water sources with 1,107 service connections.
What type of violations does LAKEWOOD have? ▼
LAKEWOOD has 242 total violations: 13 health-based violations (MCL exceedances or treatment failures), 212 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in LAKEWOOD water? ▼
No PFAS testing data is available for LAKEWOOD under the EPA's UCMR5 monitoring program.
What water source does LAKEWOOD use? ▼
LAKEWOOD uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.

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Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

Read our methodology — how this data is sourced, computed, and verified.

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