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Transient Non-Community Water System · PWS IL3139303

Randall Oaks Park Comm Shelter

West Dundee, Illinois 60118 - drinking water served from groundwater sources to 500 people, tracked in EPA SDWIS and UCMR5.

500
People served
24
EPA violations
8
Health-based
Untested
UCMR5 result

The verdict

EPA records 24 drinking-water violations at Randall Oaks Park Comm Shelter, 33% of them health-based - below the Illinois per-system average.

24
Total EPA violations on record
33%
Health-based (MCL / treatment failure)
500
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Randall Oaks Park Comm Shelter

Randall Oaks Park Comm Shelter is a local-owned transient non-community water system that delivers drinking water to 500 residents in West Dundee, Illinois (Kane County) through 1 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 24 total violations for this system , of which 8 (33%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 15 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Nitrate, recorded in 13 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. Statewide, 199 of 487 UCMR5-tested systems have reported PFAS detections (40.9%).

Randall Oaks Park Comm Shelter's 24 violations sit below 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
500
Total Violations
24
Health-Based Violations
8
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Local
Connections
1
County
Kane
School/Daycare
No
MCL Violations
4
Monitoring Violations
15
Treatment Tech Violations
4

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 13 2024
Coliform (TCR) MCL 4 2009
Revised Total Coliform Rule TT 4 2021
Coliform (TCR) MR 2 2006
Public Notice Other 1 2023

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 Randall Oaks Park Comm Shelter.

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 IL3139303 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 Randall Oaks Park Comm Shelter 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
2024 Nitrate MR 13 SDWIS / IL3139303 / 1040
2023 Public Notice Other 1 SDWIS / IL3139303 / 7500
2021 Revised Total Coliform Rule TT 4 SDWIS / IL3139303 / 8000
2009 Coliform (TCR) MCL 4 SDWIS / IL3139303 / 3100
2006 Coliform (TCR) MR 2 SDWIS / IL3139303 / 3100

How Randall Oaks Park Comm Shelter Compares

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

Metric Randall Oaks Park Comm Shelter Illinois avg Federal benchmark
Total violations 24 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 8 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 500 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 Randall Oaks Park Comm Shelter water safe to drink? ▼
Randall Oaks Park Comm Shelter (PWS ID: IL3139303) has 24 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 500 people using Groundwater sources.
How many people does Randall Oaks Park Comm Shelter serve? ▼
Randall Oaks Park Comm Shelter serves 500 people in West Dundee, Illinois. It is a Local-owned system using Groundwater water sources with 1 service connections.
What type of violations does Randall Oaks Park Comm Shelter have? ▼
Randall Oaks Park Comm Shelter has 24 total violations: 8 health-based violations (MCL exceedances or treatment failures), 15 monitoring/reporting violations, and 4 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Randall Oaks Park Comm Shelter water? ▼
No PFAS testing data is available for Randall Oaks Park Comm Shelter under the EPA's UCMR5 monitoring program.
What water source does Randall Oaks Park Comm Shelter use? ▼
Randall Oaks Park Comm Shelter uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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.