Public water system · MI0005034

Active

Oronoko Township

At a glance

Oronoko Township (PWSID MI0005034) is an active community water system in Berrien County, Michigan. It reports serving 1,610 people through 700 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in November 2025.

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

Population served

1,610

Service connections

700

Primary source

GWP

Purchased groundwater

System type

CWS

Community water system

System record

PWSIDMI0005034

System typeCommunity water system

Activity statusActive

Population served1,610

Service connections700

Primary water sourcePurchased groundwater

Owner typeLocal government

Primacy agencyMI state drinking water program

City served—

StateMichigan

ZIP—

CountyBerrien County

How does Oronoko Township compare with other water systems in Berrien County?

By EPA's size categories, Oronoko Township is a small system (501 to 3,300 people). Berrien County has 196 active public water systems. Its population served is about 141% above the county average of 669 people per system, and accounts for 1.2% of the 131,038 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active community water system reports serving 6,703 people, so Oronoko Township 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. Michigan has 1,332 active community water systems, 13% of the state's 10,599 active systems. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 42 Michigan systems (0.4%) list purchased groundwater as their primary source.

Who owns and regulates Oronoko Township?

EPA lists Oronoko Township as owned by a local government. The MI state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 24 of the 196 active systems in Berrien County (12%) are also owned by a local government.

Does Oronoko Township have drinking water violations?

EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in November 2025. The violations listed here began between August 2014 and November 2025. By type: 7 monitoring and reporting, 1 monitoring, 1 required treatment not met, 1 reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Haloacetic acids (HAA5) (3 of them). EPA lists 11 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
2025-11-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2025-11-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Chlorinecode 0999	No	Resolved
2024-10-17	Required treatment not metLSL Inventory · code 2E	Lead and Copper Rule Revisionscode 5200	Yes	Resolved
2024-10-17	ReportingLSL Reporting · code 4G	Lead and Copper Rule Revisionscode 5200	No	Resolved
2023-07-01	Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71	Consumer Confidence Rulecode 7000	No	Resolved
2023-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2023-01-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2017-08-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved
2017-08-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2014-08-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Total trihalomethanes (TTHM)code 2950	No	Resolved
2014-08-01	Monitoring and reportingMonitoring and Reporting (DBP) · code 27	Haloacetic acids (HAA5)code 2456	No	Resolved

All 11 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.

Oronoko Township: frequently asked questions

Who runs Oronoko Township?

Oronoko Township (PWSID MI0005034) is a community water system owned by a local government. It is regulated by the MI state drinking water program.

How many people does Oronoko Township serve?

Oronoko Township reports serving 1,610 people through 700 service connections in Berrien County, Michigan.

Where does Oronoko Township get its water?

EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.

Does Oronoko Township have any drinking water violations?

EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in November 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 Oronoko Township'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. EPA's records list 11 violations for this system; 1 is health-based, and the most recent began in November 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.

Where can I find Oronoko Township's water quality report?

As a community water system, Oronoko Township 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 Berrien County

Water system	County	Population served	Type	Source
Southwest Michigan Regional Sanitary Sew	Berrien	26,780	Community	Purchased surface water
Niles	Berrien	14,215	Community	Groundwater
Benton Harbor	Berrien	9,103	Community	Surface water
St Joseph	Berrien	7,930	Community	Surface water
Benton Charter Township	Berrien	6,768	Community	Surface water
Buchanan	Berrien	4,871	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, “Oronoko Township, PWSID MI0005034, Michigan”, https://aquacensus.com/water-systems/michigan/oronoko-township-mi0005034 (data as of October 1, 2026).