Public water system · IN5214007

Active

Washington Water Works

At a glance

Washington Water Works (PWSID IN5214007) is an active community water system in Daviess County, Indiana. It reports serving 13,690 people through 5,476 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in September 2025.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

13,690

Service connections

5,476

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDIN5214007

System typeCommunity water system

Activity statusActive

Population served13,690

Service connections5,476

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyIN state drinking water program

City servedWashington

StateIndiana

ZIP—

CountyDaviess County

How does Washington Water Works compare with other water systems in Daviess County?

By EPA's size categories, Washington Water Works is a large system (10,001 to 100,000 people). Daviess County has 8 active public water systems, and Washington Water Works is the largest of them by population served. Its population served is about 4.3 times the county average of 3,183 people per system, and accounts for 54% of the 25,462 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 Washington Water Works is about twice 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 Washington Water Works?

EPA lists Washington 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. 7 of the 8 active systems in Daviess County (88%) are also owned by a local government.

Does Washington Water Works have drinking water violations?

EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in September 2025. The violations listed here began between June 1980 and September 2025. By type: 4 contaminant level above the legal limit, 3 monitoring and reporting, 2 public notice, recordkeeping or other and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (5 of them). EPA lists 8 as resolved and 2 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
2025-09-05	Required treatment not metTreatment Technique No Certif. Operator · code 12	Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400	Yes	Resolved
2025-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72	Consumer Confidence Rulecode 7000	No	Resolved
2023-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
1998-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1998-05-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1997-06-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1995-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
1993-09-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1991-03-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	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 10 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.

Washington Water Works: frequently asked questions

Who runs Washington Water Works?

Washington Water Works (PWSID IN5214007) is a community water system owned by a local government. It is regulated by the IN state drinking water program.

How many people does Washington Water Works serve?

Washington Water Works reports serving 13,690 people through 5,476 service connections in Daviess County, Indiana.

Where does Washington Water Works 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 Washington Water Works have any drinking water violations?

EPA's records list 10 violations for this system; 5 are health-based, and the most recent began in September 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 Washington 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 10 violations for this system; 5 are health-based, and the most recent began in September 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 Washington Water Works' water quality report?

As a community water system, Washington 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 Daviess County

Water system	County	Population served	Type	Source
Daviess County Rural Water	Daviess	7,969	Community	Purchased groundwater
Odon Water Utilities, Inc..	Daviess	1,703	Community	Groundwater
Montgomery Water Works	Daviess	900	Community	Groundwater
Elnora Water Works	Daviess	620	Community	Groundwater
Alfordsville Water Utility	Daviess	510	Community	Purchased surface water
Tri Star Glove	Daviess	45	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, “Washington Water Works, PWSID IN5214007, Indiana”, https://aquacensus.com/water-systems/indiana/washington-water-works-in5214007 (data as of October 1, 2026).