Public water system · IN5265004
ActiveCynthiana Water Works
At a glance
Cynthiana Water Works (PWSID IN5265004) is an active community water system in Posey County, Indiana. It reports serving 699 people through 270 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in January 2007.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
699
Service connections
270
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Cynthiana Water Works compare with other water systems in Posey County?
By EPA's size categories, Cynthiana Water Works is a small system (501 to 3,300 people). Posey County has 9 active public water systems, and Cynthiana Water Works is the 4th-largest of them by population served. Its population served is about 40% below the county average of 1,172 people per system, and accounts for 6.6% of the 10,547 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 Cynthiana 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. 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 Cynthiana Water Works?
EPA lists Cynthiana 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. 4 of the 9 active systems in Posey County (44%) are also owned by a local government.
Does Cynthiana Water Works have drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in January 2007. The violations listed here began between June 1980 and January 2007. By type: 4 monitoring and reporting and 3 contaminant level above the legal limit. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 4 as resolved and 3 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2007-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2006-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2003-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1994-07-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1991-11-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1980-06-30 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Archived |
All 7 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.
Cynthiana Water Works: frequently asked questions
Who runs Cynthiana Water Works?
Cynthiana Water Works (PWSID IN5265004) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Cynthiana Water Works serve?
Cynthiana Water Works reports serving 699 people through 270 service connections in Posey County, Indiana.
Where does Cynthiana Water Works 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 Cynthiana Water Works have any drinking water violations?
EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in January 2007. 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 Cynthiana 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. EPA's records list 7 violations for this system; 3 are health-based, and the most recent began in January 2007. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.
Where can I find Cynthiana Water Works' water quality report?
As a community water system, Cynthiana 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 Posey County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mount Vernon Water Works | Posey | 6,426 | Community | Surface water |
| New Harmony Water Utility | Posey | 1,633 | Community | Groundwater |
| Poseyville Municipal Water Department | Posey | 1,400 | Community | Groundwater |
| A.B. Brown Station - Sigeco | Posey | 129 | Non-transient non-community | Groundwater |
| St. Philips Inn | Posey | 100 | Transient non-community | Groundwater |
| Mt. Zion General Baptist Church | Posey | 73 | 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, “Cynthiana Water Works, PWSID IN5265004, Indiana”, https://aquacensus.com/water-systems/indiana/cynthiana-water-works-in5265004 (data as of October 1, 2026).