Public water system · IL1430020
ActiveLimestone-Walters PWD
At a glance
Limestone-Walters PWD (PWSID IL1430020) is an active community water system in Peoria County, Illinois. It reports serving 2,023 people through 809 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,023
Service connections
809
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Limestone-Walters PWD compare with other water systems in Peoria County?
By EPA's size categories, Limestone-Walters PWD is a small system (501 to 3,300 people). Peoria County has 66 active public water systems. Its population served is about 29% below the county average of 2,857 people per system, and accounts for 1.1% of the 188,545 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 Limestone-Walters PWD 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 Limestone-Walters PWD?
EPA lists Limestone-Walters PWD 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. 13 of the 66 active systems in Peoria County (20%) are also owned by a local government.
Does Limestone-Walters PWD have drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in October 2025. The violations listed here began between October 2024 and October 2025. By type: 2 reporting, 1 monitoring and reporting, 1 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule Revisions (3 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 |
|---|---|---|---|---|
| 2025-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2025-08-22 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Unaddressed |
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | 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.
Limestone-Walters PWD: frequently asked questions
Who runs Limestone-Walters PWD?
Limestone-Walters PWD (PWSID IL1430020) is a community water system owned by a local government. It is regulated by the IL state drinking water program.
How many people does Limestone-Walters PWD serve?
Limestone-Walters PWD reports serving 2,023 people through 809 service connections in Peoria County, Illinois.
Where does Limestone-Walters PWD 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 Limestone-Walters PWD have any drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in October 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 Limestone-Walters PWD'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; 1 is health-based, and the most recent began in October 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 Limestone-Walters PWD's water quality report?
As a community water system, Limestone-Walters PWD 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 Peoria County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Il American-Peoria | Peoria | 137,575 | Community | Surface water |
| Osf St Francis Hospital | Peoria | 10,000 | Non-transient non-community | Purchased surface water |
| Chillicothe | Peoria | 6,660 | Community | Groundwater |
| Peoria Heights | Peoria | 5,908 | Community | Groundwater |
| Pleasant Valley PWD | Peoria | 3,783 | Community | Groundwater |
| Cat Mossville | Peoria | 3,000 | Non-transient non-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, “Limestone-Walters PWD, PWSID IL1430020, Illinois”, https://aquacensus.com/water-systems/illinois/limestone-walters-pwd-il1430020 (data as of October 1, 2026).