Public water system · IN5235012
ActiveWarren Municipal Water Works
At a glance
Warren Municipal Water Works (PWSID IN5235012) is an active community water system in Huntington County, Indiana. It reports serving 1,237 people through 639 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in May 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,237
Service connections
639
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Warren Municipal Water Works compare with other water systems in Huntington County?
By EPA's size categories, Warren Municipal Water Works is a small system (501 to 3,300 people). Huntington County has 33 active public water systems, and Warren Municipal Water Works is the 4th-largest of them by population served. Its population served is about 47% above the county average of 844 people per system, and accounts for 4.4% of the 27,859 people reported by systems filed under the county. Across Indiana, the 3,969 active systems average 1,456 people each. Nationally, the average active community water system reports serving 6,703 people, so Warren Municipal Water Works 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. Indiana has 770 active community water systems, 19% of the state's 3,969 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,769 Indiana systems (95%) list groundwater as their primary source.
Who owns and regulates Warren Municipal Water Works?
EPA lists Warren Municipal Water Works as owned by a local government. The IN 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 33 active systems in Huntington County (18%) are also owned by a local government.
Does Warren Municipal Water Works have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in May 2025. The violations listed here began between January 2009 and May 2025. By type: 6 monitoring and reporting, 2 public notice, recordkeeping or other, 2 reporting, 1 monitoring and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 12 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2024-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-03-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-01-21 | Required treatment not metFailure To Address Deficiency · code 45 | Groundwater Rulecode 0700 | Yes | Resolved |
| 2021-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2021-07-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2017-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-06-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2010-03-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | 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.
Warren Municipal Water Works: frequently asked questions
Who runs Warren Municipal Water Works?
Warren Municipal Water Works (PWSID IN5235012) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Warren Municipal Water Works serve?
Warren Municipal Water Works reports serving 1,237 people through 639 service connections in Huntington County, Indiana.
Where does Warren Municipal Water Works 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 Warren Municipal Water Works 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 May 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 Warren Municipal Water Works' 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 May 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.
Where can I find Warren Municipal Water Works' water quality report?
As a community water system, Warren Municipal Water Works 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 Huntington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Huntington Water Department | Huntington | 17,300 | Community | Groundwater |
| Salamonie Reservoir-Lost Brdg W Rec Area | Huntington | 2,000 | Transient non-community | Groundwater |
| Roanoke Water Works | Huntington | 1,722 | Community | Groundwater |
| Andrews Water Department | Huntington | 1,149 | Community | Groundwater |
| Markle Water Utility | Huntington | 1,095 | Community | Groundwater |
| Norwood Regional Water & Sewage | Huntington | 486 | 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, “Warren Municipal Water Works, PWSID IN5235012, Indiana”, https://aquacensus.com/water-systems/indiana/warren-municipal-water-works-in5235012 (data as of October 1, 2026).