PlainWater
States → Illinois

Community Water System · PWS IL0270100

Aviston

Aviston, Illinois 62216 - drinking water served from surface water sources to 2,545 people, tracked in EPA SDWIS and UCMR5.

2,545
People served
81
EPA violations
2
Health-based
Untested
UCMR5 result

The verdict

EPA records 81 drinking-water violations at Aviston, 2% of them health-based - above the Illinois per-system average.

81
Total EPA violations on record
2%
Health-based (MCL / treatment failure)
2,545
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Aviston

Aviston is a local-owned community water system that delivers drinking water to 2,545 residents in Aviston, Illinois (Clinton County) through 1,032 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 81 total violations for this system , of which 2 (2%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 69 monitoring and reporting violations are on file. The most recent violation on record dates to 2018.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 9 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%).

Aviston's 81 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
2,545
Total Violations
81
Health-Based Violations
2
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Local
Connections
1,032
County
Clinton
School/Daycare
No
MCL Violations
0
Monitoring Violations
69
Treatment Tech Violations
2

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 9 2004
Lead and Copper Rule MR 5 2004
Consumer Confidence Rule Other 4 2018
Chlorine MR 4 2004
Arsenic MR 4 2002
Barium MR 4 2002
Cadmium MR 4 2002
CYANIDE MR 4 2002
Fluoride MR 4 2002
Nickel MR 4 2002
Antimony, Total MR 4 2002
Beryllium, Total MR 4 2002
Thallium, Total MR 4 2002
Public Notice Other 4 2006
Selenium MR 4 2002
Mercury MR 4 2002
Chromium MR 4 2002
Chloramine MR 2 2007
Lead and Copper Rule TT 2 1999
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 Aviston.

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 IL0270100 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 Aviston 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
2018 Consumer Confidence Rule Other 4 SDWIS / IL0270100 / 7000
2007 Chloramine MR 2 SDWIS / IL0270100 / 1006
2006 Public Notice Other 4 SDWIS / IL0270100 / 7500
2004 Coliform (TCR) MR 9 SDWIS / IL0270100 / 3100
2004 Lead and Copper Rule MR 5 SDWIS / IL0270100 / 5000
2004 Chlorine MR 4 SDWIS / IL0270100 / 0999
2002 Arsenic MR 4 SDWIS / IL0270100 / 1005
2002 Barium MR 4 SDWIS / IL0270100 / 1010
2002 Cadmium MR 4 SDWIS / IL0270100 / 1015
2002 CYANIDE MR 4 SDWIS / IL0270100 / 1024
2002 Fluoride MR 4 SDWIS / IL0270100 / 1025
2002 Nickel MR 4 SDWIS / IL0270100 / 1036
2002 Antimony, Total MR 4 SDWIS / IL0270100 / 1074
2002 Beryllium, Total MR 4 SDWIS / IL0270100 / 1075
2002 Thallium, Total MR 4 SDWIS / IL0270100 / 1085

How Aviston Compares

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

Metric Aviston Illinois avg Federal benchmark
Total violations 81 69.4 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 2 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 2,545 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 Aviston water safe to drink? ▼
Aviston (PWS ID: IL0270100) has 81 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,545 people using Surface Water sources.
How many people does Aviston serve? ▼
Aviston serves 2,545 people in Aviston, Illinois. It is a Local-owned system using Surface Water water sources with 1,032 service connections.
What type of violations does Aviston have? ▼
Aviston has 81 total violations: 2 health-based violations (MCL exceedances or treatment failures), 69 monitoring/reporting violations, and 2 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Aviston water? ▼
No PFAS testing data is available for Aviston under the EPA's UCMR5 monitoring program.
What water source does Aviston use? ▼
Aviston uses Surface Water 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.