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Transient Non-Community Water System · PWS IL3149229

Western Illinois Nature Group

Galesburg, Illinois 61401 - drinking water served from groundwater sources to 50 people, tracked in EPA SDWIS and UCMR5.

50
People served
72
EPA violations
26
Health-based
Untested
UCMR5 result

The verdict

EPA records 72 drinking-water violations at Western Illinois Nature Group, 36% of them health-based - above the Illinois per-system average.

72
Total EPA violations on record
36%
Health-based (MCL / treatment failure)
50
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Western Illinois Nature Group

Western Illinois Nature Group is a private-owned transient non-community water system that delivers drinking water to 50 residents in Galesburg, Illinois (Warren County) through 2 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 72 total violations for this system , of which 26 (36%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 31 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 Revised Total Coliform Rule, recorded in 27 violations (MON). 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%).

Western Illinois Nature Group's 72 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
50
Total Violations
72
Health-Based Violations
26
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Private
Connections
2
County
Warren
School/Daycare
No
MCL Violations
12
Monitoring Violations
31
Treatment Tech Violations
14

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Revised Total Coliform Rule MON 27 2025
Revised Total Coliform Rule TT 14 2023
Public Notice Other 12 2024
Coliform (TCR) MCL 8 2011
Revised Total Coliform Rule MCL 4 2025
Nitrate MR 2 2018
Coliform (TCR) MR 2 2010

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 Western Illinois Nature Group.

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 IL3149229 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 Western Illinois Nature Group 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 Revised Total Coliform Rule MON 27 SDWIS / IL3149229 / 8000
2025 Revised Total Coliform Rule MCL 4 SDWIS / IL3149229 / 8000
2024 Public Notice Other 12 SDWIS / IL3149229 / 7500
2023 Revised Total Coliform Rule TT 14 SDWIS / IL3149229 / 8000
2018 Nitrate MR 2 SDWIS / IL3149229 / 1040
2011 Coliform (TCR) MCL 8 SDWIS / IL3149229 / 3100
2010 Coliform (TCR) MR 2 SDWIS / IL3149229 / 3100

How Western Illinois Nature Group Compares

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

Metric Western Illinois Nature Group Illinois avg Federal benchmark
Total violations 72 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 26 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 50 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 Western Illinois Nature Group water safe to drink? ▼
Western Illinois Nature Group (PWS ID: IL3149229) has 72 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 50 people using Groundwater sources.
How many people does Western Illinois Nature Group serve? ▼
Western Illinois Nature Group serves 50 people in Galesburg, Illinois. It is a Private-owned system using Groundwater water sources with 2 service connections.
What type of violations does Western Illinois Nature Group have? ▼
Western Illinois Nature Group has 72 total violations: 26 health-based violations (MCL exceedances or treatment failures), 31 monitoring/reporting violations, and 14 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Western Illinois Nature Group water? ▼
No PFAS testing data is available for Western Illinois Nature Group under the EPA's UCMR5 monitoring program.
What water source does Western Illinois Nature Group use? ▼
Western Illinois Nature Group 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.