Public water system · IL0270100
ActiveAviston
At a glance
Aviston (PWSID IL0270100) is an active community water system in Clinton County, Illinois. It reports serving 2,545 people through 1,032 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,545
Service connections
1,032
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Aviston compare with other water systems in Clinton County?
By EPA's size categories, Aviston is a small system (501 to 3,300 people). Clinton County has 24 active public water systems, and Aviston is the 5th-largest of them by population served. Its population served is about 78% above the county average of 1,428 people per system, and accounts for 7.4% of the 34,259 people reported by systems filed under the county. Across Illinois, the 3,872 active systems average 3,204 people each. Nationally, the average active community water system reports serving 6,703 people, so Aviston is about 62% below that figure.
What does “community water system” mean?
A community water system serves at least 15 connections used by year-round residents, or regularly serves at least 25 year-round residents. Homes, apartments and mobile-home parks are served by these. Illinois has 1,773 active community water systems, 46% of the state's 3,872 active systems. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 619 Illinois systems (16%) list purchased surface water as their primary source.
Who owns and regulates Aviston?
EPA lists Aviston as owned by a local government. The IL state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 18 of the 24 active systems in Clinton County (75%) are also owned by a local government.
Does Aviston have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2018. The violations listed here began between January 2002 and July 2018. By type: 8 monitoring and reporting and 4 public notice, recordkeeping or other. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 11 as resolved and 1 as archived. Resolved means at least one resolving action is on record: the system returned to compliance, the rule no longer applies, or no further action was needed. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2018-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2007-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chloraminecode 1006 | No | Resolved |
| 2006-02-16 | Public notice, recordkeeping or otherPublic Notification Violation without NPDWR Violation · code 76 | Public Noticecode 7500 | No | Resolved |
| 2006-02-16 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2004-08-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2004-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Chlorinecode 0999 | No | Resolved |
| 2004-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2003-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
The 12 most recent violations in EPA's records, newest first.Labels and codes come from EPA's SDWIS reference tables. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found. "Health-based" marks violations of a legal limit or required treatment.
Aviston: frequently asked questions
Who runs Aviston?
Aviston (PWSID IL0270100) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Aviston serve?
Aviston reports serving 2,545 people through 1,032 service connections in Clinton County, Illinois.
Where does Aviston get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Aviston have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2018. A monitoring or reporting violation means a required test or report was missed or late; it does not by itself mean a contaminant was found.
Is Aviston's water safe to drink?
AquaCensus shows EPA compliance records, not current water test results, so it cannot say whether the water is safe at a given moment. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2018. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find Aviston's water quality report?
As a community water system, Aviston must deliver an annual water quality report, called a Consumer Confidence Report, to its customers by July 1 each year, covering the previous calendar year. The system can provide a copy on request.
Other water systems in Clinton County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Breese | Clinton | 4,772 | Community | Surface water |
| New Baden | Clinton | 4,178 | Community | Purchased surface water |
| Carlyle | Clinton | 3,373 | Community | Surface water |
| Trenton | Clinton | 2,742 | Community | Purchased surface water |
| Clinton County East PWD | Clinton | 1,950 | Community | Purchased surface water |
| Carlyle North Water Company, Inc.. | Clinton | 1,850 | Community | Purchased surface water |
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About this data
Source: U.S. EPA Safe Drinking Water Information System (SDWIS) and SDWA violation records, via EPA ECHO, as published October 1, 2026 — AquaCensus refreshes it quarterly. See the methodology for how records are matched, cleaned and scored.
Cite as: AquaCensus, “Aviston, PWSID IL0270100, Illinois”, https://aquacensus.com/water-systems/illinois/aviston-il0270100 (data as of October 1, 2026).