Public water system · MI0001640
ActiveCorunna, City of
At a glance
City of Corunna (PWSID MI0001640) is an active community water system in Shiawassee County, Michigan. It reports serving 2,028 people through 845 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in November 2020.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
2,028
Service connections
845
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does City of Corunna compare with other water systems in Shiawassee County?
By EPA's size categories, City of Corunna is a small system (501 to 3,300 people). Shiawassee County has 126 active public water systems, and City of Corunna is the 4th-largest of them by population served. Its population served is about 6 times the county average of 340 people per system, and accounts for 4.7% of the 42,865 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 City of Corunna 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 City of Corunna?
EPA lists City of Corunna 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 126 active systems in Shiawassee County (5.6%) are also owned by a local government.
Does City of Corunna have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in November 2020. By type: 1 monitoring and reporting. The contaminant or rule involved is Haloacetic acids (HAA5). EPA lists 1 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 |
|---|---|---|---|---|
| 2020-11-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
The one violation in EPA's records.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.
City of Corunna: frequently asked questions
Who runs City of Corunna?
City of Corunna (PWSID MI0001640) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does City of Corunna serve?
City of Corunna reports serving 2,028 people through 845 service connections in Shiawassee County, Michigan.
Where does City of Corunna 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 City of Corunna have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in November 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 City of Corunna'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 one violation for this system; it is not health-based, and the most recent began in November 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 City of Corunna's water quality report?
As a community water system, City of Corunna 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 Shiawassee County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Owosso, City of | Shiawassee | 16,353 | Community | Surface water |
| Durand, City of | Shiawassee | 3,446 | Community | Groundwater |
| Perry, City of | Shiawassee | 2,065 | Community | Groundwater |
| Mdot - Woodbury Rest Area | Shiawassee | 1,200 | Transient non-community | Groundwater |
| Leisure Lake Snack Bar | Shiawassee | 1,000 | Transient non-community | Groundwater |
| Bancroft, Village of | Shiawassee | 616 | 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, “Corunna, City of, PWSID MI0001640, Michigan”, https://aquacensus.com/water-systems/michigan/corunna-city-of-mi0001640 (data as of October 1, 2026).