Public water system · IN5219012

Active

Patoka Lake Regional Water

At a glance

Patoka Lake Regional Water (PWSID IN5219012) is an active community water system in Dubois County, Indiana. It reports serving 13,503 people through 5,963 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, 2 are health-based, and the most recent began in July 2023.

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

Population served

13,503

Service connections

5,963

Primary source

Surface water

System type

CWS

Community water system

System record

PWSIDIN5219012

System typeCommunity water system

Activity statusActive

Population served13,503

Service connections5,963

Primary water sourceSurface water

Owner typeLocal government

Primacy agencyIN state drinking water program

City servedDubois

StateIndiana

ZIP—

CountyDubois County

How does Patoka Lake Regional Water compare with other water systems in Dubois County?

By EPA's size categories, Patoka Lake Regional Water is a large system (10,001 to 100,000 people). Dubois County has 11 active public water systems, and Patoka Lake Regional Water is the 2nd-largest of them by population served. Its population served is about 140% above the county average of 5,633 people per system, and accounts for 22% of the 61,963 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 Patoka Lake Regional Water 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. 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 Patoka Lake Regional Water?

EPA lists Patoka Lake Regional Water 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. 10 of the 11 active systems in Dubois County (91%) are also owned by a local government.

Does Patoka Lake Regional Water have drinking water violations?

Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2023. The violations listed here began between October 1979 and July 2023. By type: 8 monitoring and reporting, 2 required treatment not met, 1 public notice, recordkeeping or other and 1 reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (2 of them). EPA lists 6 as resolved and 6 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
2023-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2017-01-01	ReportingReport Sample Result/Fail Monitor (RTCR) · code 4B	Revised Total Coliform Rulecode 8000	No	Resolved
2010-07-01	Required treatment not metTreatment Technique Precursor Removal · code 46	Carbon, totalcode 2920	Yes	Resolved
2003-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
1999-05-01	Monitoring and reportingMonitoring, Routine Major (TCR) · code 23	Total coliform bacteria (TCR)code 3100	No	Resolved
1998-01-01	Monitoring and reportingMonitoring, Regular · code 03	Endothallcode 2033	No	Archived
1994-01-01	Monitoring and reportingMonitoring, Regular · code 03	Dalaponcode 2031	No	Archived
1994-01-01	Required treatment not metTreatment Technique (SWTR and GWR) · code 41	Surface Water Treatment Rulecode 0200	Yes	Resolved
1992-01-01	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
1979-10-01	Monitoring and reportingMonitoring, Regular · code 03	Cadmiumcode 1015	No	Archived
1979-10-01	Monitoring and reportingMonitoring, Regular · code 03	Mercurycode 1035	No	Archived

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.

Patoka Lake Regional Water: frequently asked questions

Who runs Patoka Lake Regional Water?

Patoka Lake Regional Water (PWSID IN5219012) is a community water system owned by a local government. It is regulated by the IN state drinking water program.

How many people does Patoka Lake Regional Water serve?

Patoka Lake Regional Water reports serving 13,503 people through 5,963 service connections in Dubois County, Indiana.

Where does Patoka Lake Regional Water 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 Patoka Lake Regional Water have any drinking water violations?

Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2023. 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 Patoka Lake Regional Water'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, 2 are health-based, and the most recent began in July 2023. For current results, consult the system's annual water quality report, EPA ECHO, or the IN state drinking water program.

Where can I find Patoka Lake Regional Water's water quality report?

As a community water system, Patoka Lake Regional Water 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 Dubois County

Water system	County	Population served	Type	Source
Jasper Municipal Water Utility	Dubois	17,440	Community	Surface water
Dubois Water Utilities	Dubois	9,078	Community	Purchased surface water
Huntingburg Municipal Water	Dubois	6,526	Community	Surface water
Ireland Utilities, Inc..	Dubois	4,395	Community	Purchased surface water
St. Henry Water Corporation	Dubois	3,293	Community	Purchased surface water
Ferdinand Water Department	Dubois	2,918	Community	Purchased surface water

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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, “Patoka Lake Regional Water, PWSID IN5219012, Indiana”, https://aquacensus.com/water-systems/indiana/patoka-lake-regional-water-in5219012 (data as of October 1, 2026).