Public water system · MI0003990
ActiveMacomb Township
At a glance
Macomb Township (PWSID MI0003990) is an active community water system in Macomb County, Michigan. It reports serving 90,000 people through 28,550 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
90,000
Service connections
28,550
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Macomb Township compare with other water systems in Macomb County?
By EPA's size categories, Macomb Township is a large system (10,001 to 100,000 people). Macomb County has 92 active public water systems, and Macomb Township is the 4th-largest of them by population served. Its population served is about 10 times the county average of 9,021 people per system, and accounts for 11% of the 829,966 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 Macomb Township is about 13 times 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 surface water means the system buys surface water from another public water system rather than drawing its own. 262 Michigan systems (2.5%) list purchased surface water as their primary source.
Who owns and regulates Macomb Township?
EPA lists Macomb 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. 22 of the 92 active systems in Macomb County (24%) are also owned by a local government.
Does Macomb Township have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 2025. The violations listed here began between July 2000 and April 2025. By type: 5 monitoring and reporting and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (2 of them). EPA lists 6 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 |
|---|---|---|---|---|
| 2025-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2025-04-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2009-01-02 | Monitoring and reportingFailure Submit IDSE/Subpart V Plan Rpt · code 35 | Stage 2 Disinfectants and Disinfection Byproducts Rulecode 0600 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring, Routine (IDSE) · code 30 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2000-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 6 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.
Macomb Township: frequently asked questions
Who runs Macomb Township?
Macomb Township (PWSID MI0003990) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Macomb Township serve?
Macomb Township reports serving 90,000 people through 28,550 service connections in Macomb County, Michigan.
Where does Macomb Township get its water?
EPA SDWIS lists this system's primary water source as purchased surface water. Purchased surface water means the system buys surface water from another public water system rather than drawing its own.
Does Macomb Township have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in April 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 Macomb 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 6 violations for this system; none is health-based, and the most recent began in April 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 Macomb Township's water quality report?
As a community water system, Macomb 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 Macomb County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Warren, City of | Macomb | 134,056 | Community | Purchased surface water |
| Sterling Heights, City of | Macomb | 127,000 | Community | Purchased surface water |
| Clinton Township | Macomb | 100,513 | Community | Purchased surface water |
| Shelby Township | Macomb | 72,000 | Community | Purchased surface water |
| St. Clair Shores, City of | Macomb | 59,715 | Community | Purchased surface water |
| Roseville, City of | Macomb | 47,299 | 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, “Macomb Township, PWSID MI0003990, Michigan”, https://aquacensus.com/water-systems/michigan/macomb-township-mi0003990 (data as of October 1, 2026).