Public water system · MI0004560

Active

Munising

At a glance

Munising (PWSID MI0004560) is an active community water system in Alger County, Michigan. It reports serving 2,783 people through 986 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; 7 are health-based, and the most recent began in July 2014.

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

Population served

2,783

Service connections

986

Primary source

Groundwater

System type

CWS

Community water system

System record

PWSIDMI0004560

System typeCommunity water system

Activity statusActive

Population served2,783

Service connections986

Primary water sourceGroundwater

Owner typeLocal government

Primacy agencyMI state drinking water program

City servedMunising

StateMichigan

ZIP—

CountyAlger County

How does Munising compare with other water systems in Alger County?

By EPA's size categories, Munising is a small system (501 to 3,300 people). Alger County has 85 active public water systems, and Munising is the largest of them by population served. Its population served is about 24 times the county average of 115 people per system, and accounts for 28% of the 9,767 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 Munising is about 58% 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,214 Michigan systems (96%) list groundwater as their primary source.

Who owns and regulates Munising?

EPA lists Munising 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. 7 of the 85 active systems in Alger County (8.2%) are also owned by a local government.

Does Munising have drinking water violations?

EPA's records list 10 violations for this system; 7 are health-based, and the most recent began in July 2014. The violations listed here began between January 1991 and July 2014. By type: 7 contaminant level above the legal limit, 2 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (9 of them). EPA lists 10 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	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2013-07-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2012-09-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2011-08-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2011-06-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
2003-09-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1998-12-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1998-11-01	Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26	Total coliform bacteria (TCR)code 3100	No	Resolved
1997-08-01	Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24	Total coliform bacteria (TCR)code 3100	No	Resolved
1991-01-01	Public notice, recordkeeping or otherSanitary Survey (TCR) · code 28	Not reported	No	Resolved

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.

Munising: frequently asked questions

Who runs Munising?

Munising (PWSID MI0004560) is a community water system owned by a local government. It is regulated by the MI state drinking water program.

How many people does Munising serve?

Munising reports serving 2,783 people through 986 service connections in Alger County, Michigan.

Where does Munising 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 Munising have any drinking water violations?

EPA's records list 10 violations for this system; 7 are 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 Munising'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 10 violations for this system; 7 are 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 MI state drinking water program.

Where can I find Munising's water quality report?

As a community water system, Munising 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 Alger County

Water system	County	Population served	Type	Source
Munising Industrial Park	Alger	465	Community	Groundwater
Burt Township	Alger	411	Community	Groundwater
Chatham	Alger	300	Community	Groundwater
Pictured Rocks Rv Park & Campground	Alger	288	Transient non-community	Groundwater
Autrain Beach Campground	Alger	200	Transient non-community	Groundwater
Mdot - Grand Island Overlook, P238	Alger	200	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, “Munising, PWSID MI0004560, Michigan”, https://aquacensus.com/water-systems/michigan/munising-mi0004560 (data as of October 1, 2026).