Public water system · IL0630060
ActivePrairie Oaks Ests Homeowners Assn
At a glance
Prairie Oaks Ests Homeowners Assn (PWSID IL0630060) is an active community water system in Grundy County, Illinois. It reports serving 107 people through 36 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
107
Service connections
36
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Prairie Oaks Ests Homeowners Assn compare with other water systems in Grundy County?
By EPA's size categories, Prairie Oaks Ests Homeowners Assn is a very small system (500 people or fewer). Grundy County has 51 active public water systems. Its population served is well below the county average of 1,002 people per system, and accounts for 0.2% of the 51,074 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 Prairie Oaks Ests Homeowners Assn 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 2,808 Illinois systems (73%) list groundwater as their primary source.
Who owns and regulates Prairie Oaks Ests Homeowners Assn?
EPA lists Prairie Oaks Ests Homeowners Assn as privately owned. 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. 29 of the 51 active systems in Grundy County (57%) are also privately owned.
Does Prairie Oaks Ests Homeowners Assn have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 2025. The violations listed here began between April 2007 and September 2025. By type: 5 monitoring and reporting, 4 public notice, recordkeeping or other, 2 reporting and 1 required treatment not met. The contaminant or rule involved most often is Lead and Copper Rule Revisions (3 of them). EPA lists 10 as resolved and 2 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 |
|---|---|---|---|---|
| 2025-09-01 | 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 |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | 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 |
| 2017-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2016-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2012-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2007-04-18 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | 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.
Prairie Oaks Ests Homeowners Assn: frequently asked questions
Who runs Prairie Oaks Ests Homeowners Assn?
Prairie Oaks Ests Homeowners Assn (PWSID IL0630060) is a community water system privately owned. It is regulated by the IL state drinking water program.
How many people does Prairie Oaks Ests Homeowners Assn serve?
Prairie Oaks Ests Homeowners Assn reports serving 107 people through 36 service connections in Grundy County, Illinois.
Where does Prairie Oaks Ests Homeowners Assn get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Prairie Oaks Ests Homeowners Assn have any drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in September 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 Prairie Oaks Ests Homeowners Assn'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, one is health-based, and the most recent began in September 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 Prairie Oaks Ests Homeowners Assn's water quality report?
As a community water system, Prairie Oaks Ests Homeowners Assn 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 Grundy County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Morris | Grundy | 14,775 | Community | Groundwater |
| Minooka | Grundy | 12,800 | Community | Groundwater |
| Coal City | Grundy | 5,749 | Community | Groundwater |
| Diamond | Grundy | 2,508 | Community | Groundwater |
| Coal City Area Club | Grundy | 2,500 | Transient non-community | Groundwater |
| Gardner | Grundy | 1,361 | 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, “Prairie Oaks Ests Homeowners Assn, PWSID IL0630060, Illinois”, https://aquacensus.com/water-systems/illinois/prairie-oaks-ests-homeowners-assn-il0630060 (data as of October 1, 2026).