Public water system · IN5216005
ActiveWestport Water Company
At a glance
Westport Water Company (PWSID IN5216005) is an active community water system in Decatur County, Indiana. It reports serving 1,725 people through 690 service connections. Its primary water source is surface water, 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 March 2026.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,725
Service connections
690
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Westport Water Company compare with other water systems in Decatur County?
By EPA's size categories, Westport Water Company is a small system (501 to 3,300 people). Decatur County has 17 active public water systems, and Westport Water Company is the 3rd-largest of them by population served. Its population served is about 29% above the county average of 1,341 people per system, and accounts for 7.6% of the 22,794 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 Westport Water Company 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 30 Indiana systems (0.8%) list surface water as their primary source.
Who owns and regulates Westport Water Company?
EPA lists Westport Water Company 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 17 active systems in Decatur County (35%) are also owned by a local government.
Does Westport Water Company have drinking water violations?
Of the 12 most recent violations in EPA's records, 3 are health-based, and the most recent began in March 2026. The violations listed here began between July 2023 and March 2026. By type: 9 monitoring and reporting, 2 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Atrazine (2 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2026-03-05 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | No | Resolved |
| 2024-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Mercurycode 1035 | No | Archived |
| 2024-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2023-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Archived |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) phthalatecode 2039 | No | Resolved |
| 2023-07-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | 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.
Westport Water Company: frequently asked questions
Who runs Westport Water Company?
Westport Water Company (PWSID IN5216005) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Westport Water Company serve?
Westport Water Company reports serving 1,725 people through 690 service connections in Decatur County, Indiana.
Where does Westport Water Company get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does Westport Water Company 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 March 2026. 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 Westport Water Company'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, 3 are health-based, and the most recent began in March 2026. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.
Where can I find Westport Water Company's water quality report?
As a community water system, Westport Water Company 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 Decatur County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Greensburg Municipal Water Works | Decatur | 12,650 | Community | Surface water |
| Decatur Co. Water Corp. | Decatur | 3,440 | Community | Purchased surface water |
| Lake Santee Rwwd | Decatur | 1,500 | Community | Surface water |
| St. Paul Municipal Water | Decatur | 1,096 | Community | Groundwater |
| Westport Water Company - Cougar Road | Decatur | 933 | Non-transient non-community | Purchased surface water |
| Lions Camp Woodsmoke | Decatur | 500 | 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, “Westport Water Company, PWSID IN5216005, Indiana”, https://aquacensus.com/water-systems/indiana/westport-water-company-in5216005 (data as of October 1, 2026).