Public water system · MI0006540
ActiveTawas City, City of
At a glance
City of Tawas City (PWSID MI0006540) is an active community water system in Iosco County, Michigan. It reports serving 1,834 people through 1,100 service connections. Its primary water source is purchased surface water, and EPA lists it as owned by a local government. EPA's records list 2 violations for this system; none is health-based, and the most recent began in September 2018.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,834
Service connections
1,100
Primary source
SWP
Purchased surface water
System type
CWS
Community water system
System record
How does City of Tawas City compare with other water systems in Iosco County?
By EPA's size categories, City of Tawas City is a small system (501 to 3,300 people). Iosco County has 81 active public water systems, and City of Tawas City is the 5th-largest of them by population served. Its population served is about 6.2 times the county average of 294 people per system, and accounts for 7.7% of the 23,789 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 Tawas City 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 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 City of Tawas City?
EPA lists City of Tawas City 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 81 active systems in Iosco County (8.6%) are also owned by a local government.
Does City of Tawas City have drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in September 2018. The violations listed here began between September 2018 and September 2018. By type: 2 monitoring and reporting. The contaminants or rules involved are Haloacetic acids (HAA5) and Total trihalomethanes (TTHM). EPA lists 2 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 |
|---|---|---|---|---|
| 2018-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2018-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
All 2 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.
City of Tawas City: frequently asked questions
Who runs City of Tawas City?
City of Tawas City (PWSID MI0006540) 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 Tawas City serve?
City of Tawas City reports serving 1,834 people through 1,100 service connections in Iosco County, Michigan.
Where does City of Tawas City 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 City of Tawas City have any drinking water violations?
EPA's records list 2 violations for this system; none is health-based, and the most recent began in September 2018. 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 Tawas City'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 2 violations for this system; none is health-based, and the most recent began in September 2018. 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 Tawas City's water quality report?
As a community water system, City of Tawas City 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 Iosco County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Oscoda Township | Iosco | 6,997 | Community | Purchased surface water |
| East Tawas, City of | Iosco | 2,663 | Community | Purchased surface water |
| Au Sable Township | Iosco | 2,370 | Community | Purchased surface water |
| Old Orchard Park Campground | Iosco | 2,000 | Transient non-community | Groundwater |
| Whittemore/Prescott School Complex | Iosco | 860 | Non-transient non-community | Groundwater |
| Baldwin Township | Iosco | 650 | 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, “Tawas City, City of, PWSID MI0006540, Michigan”, https://aquacensus.com/water-systems/michigan/tawas-city-city-of-mi0006540 (data as of October 1, 2026).