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Community Water System · PWS IL0977370

West Shore Park Subdivision

Mundelein, Illinois 60060 - drinking water served from groundwater sources to 590 people, tracked in EPA SDWIS and UCMR5.

590
People served
141
EPA violations
112
Health-based
Untested
UCMR5 result

The verdict

EPA records 141 drinking-water violations at West Shore Park Subdivision, 79% of them health-based - above the Illinois per-system average.

141
Total EPA violations on record
79%
Health-based (MCL / treatment failure)
590
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: West Shore Park Subdivision

West Shore Park Subdivision is a private-owned community water system that delivers drinking water to 590 residents in Mundelein, Illinois (Lake County) through 173 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 141 total violations for this system , of which 112 (79%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 7 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 Combined Radium (-226 and -228), recorded in 110 violations (MCL, health-based). 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. Statewide, 123 of 487 UCMR5-tested systems have reported PFAS detections (25.3%).

West Shore Park Subdivision's 141 violations sit above the Illinois average.

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
590
Total Violations
141
Health-Based Violations
112
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
173
County
Lake
School/Daycare
No
MCL Violations
110
Monitoring Violations
7
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Combined Radium (-226 and -228) MCL 110 2004
Public Notice Other 4 2004
Nitrate MR 4 2004
LEAD AND COPPER RULE REVISIONS RPT 3 2025
Combined Radium (-226 and -228) MR 2 2021
Lead and Copper Rule TT 2 1994
Gross Alpha, Excl. Radon and U MR 1 1977
Consumer Confidence Rule Other 1 2025

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 West Shore Park Subdivision.

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 IL0977370 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 West Shore Park Subdivision 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 LEAD AND COPPER RULE REVISIONS RPT 3 SDWIS / IL0977370 / 5200
2025 Consumer Confidence Rule Other 1 SDWIS / IL0977370 / 7000
2021 Combined Radium (-226 and -228) MR 2 SDWIS / IL0977370 / 4010
2004 Combined Radium (-226 and -228) MCL 110 SDWIS / IL0977370 / 4010
2004 Public Notice Other 4 SDWIS / IL0977370 / 7500
2004 Nitrate MR 4 SDWIS / IL0977370 / 1040
1994 Lead and Copper Rule TT 2 SDWIS / IL0977370 / 5000
1977 Gross Alpha, Excl. Radon and U MR 1 SDWIS / IL0977370 / 4000

How West Shore Park Subdivision Compares

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

Metric West Shore Park Subdivision Illinois avg Federal benchmark
Total violations 141 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 112 10.3 Indicates a contaminant exceeded a federal MCL
PFAS detection None 25.3% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 590 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 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is West Shore Park Subdivision water safe to drink? ▼
West Shore Park Subdivision (PWS ID: IL0977370) has 141 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 590 people using Groundwater sources.
How many people does West Shore Park Subdivision serve? ▼
West Shore Park Subdivision serves 590 people in Mundelein, Illinois. It is a Private-owned system using Groundwater water sources with 173 service connections.
What type of violations does West Shore Park Subdivision have? ▼
West Shore Park Subdivision has 141 total violations: 112 health-based violations (MCL exceedances or treatment failures), 7 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in West Shore Park Subdivision water? ▼
No PFAS testing data is available for West Shore Park Subdivision under the EPA's UCMR5 monitoring program.
What water source does West Shore Park Subdivision use? ▼
West Shore Park Subdivision 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.
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.

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 system's figures are rendered directly from 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.