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Community Water System · PWS IL1350250

Fillmore

Fillmore, Illinois 62032 - drinking water served from groundwater sources to 330 people, tracked in EPA SDWIS and UCMR5.

330
People served
278
EPA violations
16
Health-based
Untested
UCMR5 result

The verdict

EPA records 278 drinking-water violations at Fillmore, 6% of them health-based - above the Illinois per-system average.

278
Total EPA violations on record
6%
Health-based (MCL / treatment failure)
330
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Fillmore

Fillmore is a local-owned community water system that delivers drinking water to 330 residents in Fillmore, Illinois (Montgomery County) through 154 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 278 total violations for this system , of which 16 (6%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 211 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 66 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%).

Fillmore's 278 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
330
Total Violations
278
Health-Based Violations
16
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
154
County
Montgomery
School/Daycare
No
MCL Violations
14
Monitoring Violations
211
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 66 2008
Nitrate MR 31 2018
Coliform (TCR) MCL 14 1998
Chlorine MR 12 2009
Lead and Copper Rule MR 10 2022
Arsenic MR 4 1986
Cadmium MR 4 1986
Chromium MR 4 1986
Fluoride MR 4 1986
Consumer Confidence Rule Other 4 2021
Selenium MR 4 1986
Barium MR 4 1986
Mercury MR 4 1986
OXAMYL MR 3 1995
Simazine MR 3 1995
Di(2-ethylhexyl) phthalate MR 3 1995
Picloram MR 3 1995
Hexachlorocyclopentadiene MR 3 1995
Aldicarb sulfone MR 3 1995
Aldicarb MR 3 1995
HEXACHLOROBENZENE MR 3 1995
Benzo(a)pyrene MR 3 1995
Diquat MR 3 1995
Dinoseb MR 3 1995
Aldicarb sulfoxide MR 3 1995
Di(2-ethylhexyl) adipate MR 3 1995
Endothall MR 3 1995
Dalapon MR 3 1995
Endrin MR 3 1995
LEAD AND COPPER RULE REVISIONS RPT 2 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 Fillmore.

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 IL1350250 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 Fillmore 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 2 SDWIS / IL1350250 / 5200
2025 Public Notice Other 1 SDWIS / IL1350250 / 7500
2024 LEAD AND COPPER RULE REVISIONS TT 2 SDWIS / IL1350250 / 5200
2022 Lead and Copper Rule MR 10 SDWIS / IL1350250 / 5000
2021 Consumer Confidence Rule Other 4 SDWIS / IL1350250 / 7000
2018 Nitrate MR 31 SDWIS / IL1350250 / 1040
2009 Chlorine MR 12 SDWIS / IL1350250 / 0999
2008 Coliform (TCR) MR 66 SDWIS / IL1350250 / 3100
1998 Coliform (TCR) MCL 14 SDWIS / IL1350250 / 3100
1995 OXAMYL MR 3 SDWIS / IL1350250 / 2036
1995 Simazine MR 3 SDWIS / IL1350250 / 2037
1995 Di(2-ethylhexyl) phthalate MR 3 SDWIS / IL1350250 / 2039
1995 Picloram MR 3 SDWIS / IL1350250 / 2040
1995 Hexachlorocyclopentadiene MR 3 SDWIS / IL1350250 / 2042
1995 Aldicarb sulfone MR 3 SDWIS / IL1350250 / 2044

How Fillmore Compares

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

Metric Fillmore Illinois avg Federal benchmark
Total violations 278 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 16 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 330 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 Fillmore water safe to drink? ▼
Fillmore (PWS ID: IL1350250) has 278 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 330 people using Groundwater sources.
How many people does Fillmore serve? ▼
Fillmore serves 330 people in Fillmore, Illinois. It is a Local-owned system using Groundwater water sources with 154 service connections.
What type of violations does Fillmore have? ▼
Fillmore has 278 total violations: 16 health-based violations (MCL exceedances or treatment failures), 211 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Fillmore water? ▼
No PFAS testing data is available for Fillmore under the EPA's UCMR5 monitoring program.
What water source does Fillmore use? ▼
Fillmore 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.