Public water system · MI0003040
ActiveHarrison Township
At a glance
Harrison Township (PWSID MI0003040) is an active community water system in Macomb County, Michigan. It reports serving 24,314 people through 9,750 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
24,314
Service connections
9,750
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Harrison Township compare with other water systems in Macomb County?
By EPA's size categories, Harrison Township is a large system (10,001 to 100,000 people). Macomb County has 92 active public water systems. Its population served is about 170% above the county average of 9,021 people per system, and accounts for 2.9% 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 Harrison Township is about 3.6 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 Harrison Township?
EPA lists Harrison 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 Harrison Township have drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2020. The violations listed here began between March 2014 and October 2020. By type: 3 monitoring and reporting. The contaminants or rules involved are Lead and Copper Rule, Total trihalomethanes (TTHM) and Haloacetic acids (HAA5). EPA lists 3 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 |
|---|---|---|---|---|
| 2020-10-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2014-03-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2014-03-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
All 3 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.
Harrison Township: frequently asked questions
Who runs Harrison Township?
Harrison Township (PWSID MI0003040) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Harrison Township serve?
Harrison Township reports serving 24,314 people through 9,750 service connections in Macomb County, Michigan.
Where does Harrison 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 Harrison Township have any drinking water violations?
EPA's records list 3 violations for this system; none is health-based, and the most recent began in October 2020. 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 Harrison 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 3 violations for this system; none is health-based, and the most recent began in October 2020. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Harrison Township's water quality report?
As a community water system, Harrison 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 |
| Macomb Township | Macomb | 90,000 | 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 |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Harrison Township, PWSID MI0003040, Michigan”, https://aquacensus.com/water-systems/michigan/harrison-township-mi0003040 (data as of October 1, 2026).