Public water system · IN5288006
ActivePosey Township Water Corp.
At a glance
Posey Township Water Corp. (PWSID IN5288006) is an active community water system in Washington County, Indiana. It reports serving 3,500 people through 1,400 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,500
Service connections
1,400
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Posey Township Water Corp. compare with other water systems in Washington County?
By EPA's size categories, Posey Township Water Corp. is a medium system (3,301 to 10,000 people). Washington County has 8 active public water systems, and Posey Township Water Corp. is the 3rd-largest of them by population served. Its population served is about 19% above the county average of 2,954 people per system, and accounts for 15% of the 23,628 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 Posey Township Water Corp. is about half of 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. Purchased surface water means the system buys surface water from another public water system rather than drawing its own. 82 Indiana systems (2.1%) list purchased surface water as their primary source.
Who owns and regulates Posey Township Water Corp.?
EPA lists Posey Township Water Corp. 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. 5 of the 8 active systems in Washington County (63%) are also owned by a local government.
Does Posey Township Water Corp. have drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in July 2025. The violations listed here began between September 2011 and July 2025. By type: 7 contaminant level above the legal limit, 4 monitoring and reporting and 1 reporting. The contaminant or rule involved most often is Haloacetic acids (HAA5) (8 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 |
|---|---|---|---|---|
| 2025-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2018-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2017-01-01 | ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2016-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2015-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2015-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2015-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2014-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2014-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2011-09-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | 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.
Posey Township Water Corp.: frequently asked questions
Who runs Posey Township Water Corp.?
Posey Township Water Corp. (PWSID IN5288006) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Posey Township Water Corp. serve?
Posey Township Water Corp. reports serving 3,500 people through 1,400 service connections in Washington County, Indiana.
Where does Posey Township Water Corp. get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Posey Township Water Corp. have any drinking water violations?
Of the 12 most recent violations in EPA's records, 7 are health-based, and the most recent began in July 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 Posey Township Water Corp.'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, 7 are health-based, and the most recent began in July 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 Posey Township Water Corp.'s water quality report?
As a community water system, Posey Township Water Corp. 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 Washington County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| East Washington Rural Water | Washington | 8,613 | Community | Purchased surface water |
| Salem Water Works | Washington | 8,200 | Community | Surface water |
| New Pekin Water Utility | Washington | 2,150 | Community | Purchased surface water |
| Campbellsburg Water Works | Washington | 900 | Community | Groundwater |
| Mount Tabor Christian Church | Washington | 200 | Transient non-community | Groundwater |
| Peek A Boo Lake (Spring) | Washington | 40 | 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, “Posey Township Water Corp., PWSID IN5288006, Indiana”, https://aquacensus.com/water-systems/indiana/posey-township-water-corp-in5288006 (data as of October 1, 2026).