Public water system · IL0010300
ActiveLa Prairie
At a glance
La Prairie (PWSID IL0010300) is an active community water system in Adams County, Illinois. It reports serving 47 people through 23 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in April 2023.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
47
Service connections
23
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does La Prairie compare with other water systems in Adams County?
By EPA's size categories, La Prairie is a very small system (500 people or fewer). Adams County has 22 active public water systems. Its population served is well below the county average of 3,086 people per system, and accounts for less than 0.1% of the 67,881 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 La Prairie 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 groundwater means the system buys groundwater from another public water system rather than drawing its own. 348 Illinois systems (9%) list purchased groundwater as their primary source.
Who owns and regulates La Prairie?
EPA lists La Prairie 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. 15 of the 22 active systems in Adams County (68%) are also owned by a local government.
Does La Prairie have drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in April 2023. The violations listed here began between April 2001 and April 2023. By type: 5 monitoring and reporting, 3 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 7 as resolved and 2 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 |
|---|---|---|---|---|
| 2023-04-02 | Required treatment not metOCCT/SOWT Study/Recommendation · code 57 | Lead and Copper Rulecode 5000 | Yes | Resolved |
| 2008-10-08 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2008-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2007-07-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2007-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2003-06-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2002-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 2001-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2001-04-01 | Monitoring and reportingWater Quality Parameter M/R · code 53 | Lead and Copper Rulecode 5000 | No | Resolved |
All 9 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.
La Prairie: frequently asked questions
Who runs La Prairie?
La Prairie (PWSID IL0010300) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does La Prairie serve?
La Prairie reports serving 47 people through 23 service connections in Adams County, Illinois.
Where does La Prairie get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does La Prairie have any drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in April 2023. 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 La Prairie'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 9 violations for this system; 1 is health-based, and the most recent began in April 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the IL state drinking water program.
Where can I find La Prairie's water quality report?
As a community water system, La Prairie 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 Adams County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Quincy | Adams | 42,000 | Community | Surface water |
| Abs Water Coop | Adams | 6,858 | Community | Purchased groundwater |
| Mill Creek PWD | Adams | 5,755 | Community | Groundwater |
| Clayton-Camp Point Water Commission | Adams | 2,470 | Community | Groundwater |
| Blessing Hospital | Adams | 2,460 | Non-transient non-community | Purchased surface water |
| Payson | Adams | 1,386 | Community | Groundwater |
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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, “La Prairie, PWSID IL0010300, Illinois”, https://aquacensus.com/water-systems/illinois/la-prairie-il0010300 (data as of October 1, 2026).