Public water system · IN5201002
ActiveDecatur Water Department
At a glance
Decatur Water Department (PWSID IN5201002) is an active community water system in Adams County, Indiana. It reports serving 9,900 people through 4,600 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, none is health-based, and the most recent began in July 2014.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
9,900
Service connections
4,600
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Decatur Water Department compare with other water systems in Adams County?
By EPA's size categories, Decatur Water Department is a medium system (3,301 to 10,000 people). Adams County has 74 active public water systems, and Decatur Water Department is the largest of them by population served. Its population served is about 32 times the county average of 310 people per system, and accounts for 43% of the 22,936 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 Decatur Water Department is about 48% above 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 Decatur Water Department?
EPA lists Decatur Water Department 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 74 active systems in Adams County (5.4%) are also owned by a local government.
Does Decatur Water Department have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2014. The violations listed here began between January 2002 and July 2014. By type: 9 monitoring and reporting and 3 public notice, recordkeeping or other. The contaminant or rule involved most often is Consumer Confidence 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 |
|---|---|---|---|---|
| 2014-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2006-09-07 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2005-11-09 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cadmiumcode 1015 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nickelcode 1036 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Bariumcode 1010 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chromiumcode 1020 | No | Resolved |
| 2002-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Fluoridecode 1025 | 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.
Decatur Water Department: frequently asked questions
Who runs Decatur Water Department?
Decatur Water Department (PWSID IN5201002) is a community water system owned by a local government. It is regulated by the IN state drinking water program.
How many people does Decatur Water Department serve?
Decatur Water Department reports serving 9,900 people through 4,600 service connections in Adams County, Indiana.
Where does Decatur Water Department 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 Decatur Water Department have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in July 2014. 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 Decatur Water Department'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, none is health-based, and the most recent began in July 2014. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.
Where can I find Decatur Water Department's water quality report?
As a community water system, Decatur Water Department 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 Adams County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Berne Water Department | Adams | 4,388 | Community | Groundwater |
| Geneva Water Department | Adams | 1,359 | Community | Groundwater |
| Monroe Water Department | Adams | 872 | Community | Groundwater |
| Amishville U.S.A. | Adams | 821 | Transient non-community | Groundwater |
| St. John Lutheran Church | Adams | 307 | Transient non-community | Groundwater |
| Zion Evangelical Luthrn Church Friedheim | Adams | 300 | 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, “Decatur Water Department, PWSID IN5201002, Indiana”, https://aquacensus.com/water-systems/indiana/decatur-water-department-in5201002 (data as of October 1, 2026).