Public water system · IL0510300
ActiveSt Peter
At a glance
St Peter (PWSID IL0510300) is an active community water system in Fayette County, Illinois. It reports serving 483 people through 193 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
483
Service connections
193
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does St Peter compare with other water systems in Fayette County?
By EPA's size categories, St Peter is a very small system (500 people or fewer). Fayette County has 11 active public water systems. Its population served is well below the county average of 1,654 people per system, and accounts for 2.7% of the 18,196 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 St Peter is well 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 St Peter?
EPA lists St Peter 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. 6 of the 11 active systems in Fayette County (55%) are also owned by a local government.
Does St Peter have drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 2025. The violations listed here began between January 1997 and July 2025. By type: 2 public notice, recordkeeping or other, 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 4 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2005-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2004-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1997-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Atrazinecode 2050 | Yes | Resolved |
| 1997-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Atrazinecode 2050 | Yes | Resolved |
All 5 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.
St Peter: frequently asked questions
Who runs St Peter?
St Peter (PWSID IL0510300) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does St Peter serve?
St Peter reports serving 483 people through 193 service connections in Fayette County, Illinois.
Where does St Peter 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 St Peter have any drinking water violations?
EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 2025. 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 St Peter'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. EPA's records list 5 violations for this system; 2 are health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find St Peter's water quality report?
As a community water system, St Peter 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 Fayette County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Vandalia | Fayette | 7,616 | Community | Surface water |
| Fayette Water Company | Fayette | 5,608 | Community | Purchased surface water |
| St Elmo | Fayette | 1,272 | Community | Purchased surface water |
| Ramsey | Fayette | 966 | Community | Purchased groundwater |
| Brownstown | Fayette | 740 | Community | Purchased groundwater |
| Vandalia Correctional Center | Fayette | 700 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “St Peter, PWSID IL0510300, Illinois”, https://aquacensus.com/water-systems/illinois/st-peter-il0510300 (data as of October 1, 2026).