Public water system · IN5206005
ActiveThorntown Utilities
At a glance
Thorntown Utilities (PWSID IN5206005) is an active community water system in Boone County, Indiana. It reports serving 1,600 people through 676 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, 3 are health-based, and the most recent began in October 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,600
Service connections
676
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Thorntown Utilities compare with other water systems in Boone County?
By EPA's size categories, Thorntown Utilities is a small system (501 to 3,300 people). Boone County has 30 active public water systems, and Thorntown Utilities is the 3rd-largest of them by population served. Its population served is about 56% above the county average of 1,026 people per system, and accounts for 5.2% of the 30,768 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 Thorntown Utilities 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 Thorntown Utilities?
EPA lists Thorntown Utilities 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. 7 of the 30 active systems in Boone County (23%) are also owned by a local government.
Does Thorntown Utilities have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in October 2025. The violations listed here began between February 2002 and October 2025. By type: 4 monitoring and reporting, 3 public notice, recordkeeping or other, 3 contaminant level above the legal limit, 1 reporting and 1 monitoring. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 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 |
|---|---|---|---|---|
| 2025-10-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2025-07-02 | ReportingNotification, Known or Potential LSL · code 4H | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2019-11-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2014-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2014-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2009-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2007-09-27 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2002-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-08-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2002-02-15 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | 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.
Thorntown Utilities: frequently asked questions
Who runs Thorntown Utilities?
Thorntown Utilities (PWSID IN5206005) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Thorntown Utilities serve?
Thorntown Utilities reports serving 1,600 people through 676 service connections in Boone County, Indiana.
Where does Thorntown Utilities 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 Thorntown Utilities have any drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are 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 Thorntown Utilities' 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, 3 are 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 IN state drinking water program.
Where can I find Thorntown Utilities' water quality report?
As a community water system, Thorntown Utilities 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 Boone County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Lebanon Utilities | Boone | 16,840 | Community | Groundwater |
| Citizens Water - Whitestown | Boone | 5,880 | Community | Purchased surface water |
| Jamestown Municipal Water | Boone | 1,000 | Community | Groundwater |
| Western Boone Schools | Boone | 876 | Non-transient non-community | Groundwater |
| Zionsville Youth Soccer Association | Boone | 505 | Transient non-community | Groundwater |
| Advance Water Works | Boone | 500 | 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, “Thorntown Utilities, PWSID IN5206005, Indiana”, https://aquacensus.com/water-systems/indiana/thorntown-utilities-in5206005 (data as of October 1, 2026).