Public water system · MI0000485
ActiveBay Co. Dept of Water & Sewer
At a glance
Bay Co. Dept of Water & Sewer (PWSID MI0000485) is an active community water system in Bay County, Michigan. It reports serving 8,465 people through 3,323 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's Safe Drinking Water Act records list no violations for this system.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
8,465
Service connections
3,323
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does Bay Co. Dept of Water & Sewer compare with other water systems in Bay County?
By EPA's size categories, Bay Co. Dept of Water & Sewer is a medium system (3,301 to 10,000 people). Bay County has 29 active public water systems, and Bay Co. Dept of Water & Sewer is the 4th-largest of them by population served. Its population served is about 148% above the county average of 3,416 people per system, and accounts for 8.5% of the 99,076 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 Bay Co. Dept of Water & Sewer is about 26% above 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 Bay Co. Dept of Water & Sewer?
EPA lists Bay Co. Dept of Water & Sewer 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. 21 of the 29 active systems in Bay County (72%) are also owned by a local government.
Does Bay Co. Dept of Water & Sewer have drinking water violations?
No SDWA violations on record.
EPA's SDWA violation and enforcement data (via EPA ECHO, updated quarterly) lists no violations for Bay Co. Dept of Water & Sewer. For the latest compliance status, check EPA ECHO for current compliance history.
Bay Co. Dept of Water & Sewer: frequently asked questions
Who runs Bay Co. Dept of Water & Sewer?
Bay Co. Dept of Water & Sewer (PWSID MI0000485) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Bay Co. Dept of Water & Sewer serve?
Bay Co. Dept of Water & Sewer reports serving 8,465 people through 3,323 service connections in Bay County, Michigan.
Where does Bay Co. Dept of Water & Sewer 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 Bay Co. Dept of Water & Sewer have any drinking water violations?
EPA's Safe Drinking Water Act records list no violations for this system.
Is Bay Co. Dept of Water & Sewer'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 Safe Drinking Water Act records list no violations for this system. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Bay Co. Dept of Water & Sewer's water quality report?
As a community water system, Bay Co. Dept of Water & Sewer 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 Bay County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bay City, City of | Bay | 32,255 | Community | Purchased surface water |
| Bangor Township | Bay | 11,999 | Community | Purchased surface water |
| Hampton Township | Bay | 9,652 | Community | Purchased surface water |
| Williams Township | Bay | 5,444 | Community | Purchased surface water |
| Monitor Township | Bay | 5,217 | Community | Purchased surface water |
| Frankenlust Township | Bay | 3,626 | 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, “Bay Co. Dept of Water & Sewer, PWSID MI0000485, Michigan”, https://aquacensus.com/water-systems/michigan/bay-co-dept-of-water-sewer-mi0000485 (data as of October 1, 2026).