Public water system · MI0001500
ActiveColdwater
At a glance
Coldwater (PWSID MI0001500) is an active community water system in Branch County, Michigan. It reports serving 13,822 people through 3,468 service connections. Its primary water source is 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 October 2003.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
13,822
Service connections
3,468
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Coldwater compare with other water systems in Branch County?
By EPA's size categories, Coldwater is a large system (10,001 to 100,000 people). Branch County has 71 active public water systems, and Coldwater is the largest of them by population served. Its population served is about 31 times the county average of 450 people per system, and accounts for 43% of the 31,918 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 Coldwater is about twice 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. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 10,214 Michigan systems (96%) list groundwater as their primary source.
Who owns and regulates Coldwater?
EPA lists Coldwater 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. 4 of the 71 active systems in Branch County (5.6%) are also owned by a local government.
Does Coldwater have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in October 2003. By type: 1 public notice, recordkeeping or other. 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 |
|---|---|---|---|---|
| 2003-10-01 | Public notice, recordkeeping or otherOperations Report · code 10 | Not reported | 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.
Coldwater: frequently asked questions
Who runs Coldwater?
Coldwater (PWSID MI0001500) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Coldwater serve?
Coldwater reports serving 13,822 people through 3,468 service connections in Branch County, Michigan.
Where does Coldwater get its water?
EPA SDWIS lists this system's primary water source as groundwater. Groundwater means the system draws its water from wells or springs fed by underground aquifers.
Does Coldwater 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 October 2003. 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 Coldwater'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 October 2003. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Coldwater's water quality report?
As a community water system, Coldwater 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 Branch County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bronson | Branch | 2,421 | Community | Groundwater |
| Union City | Branch | 1,630 | Community | Groundwater |
| Quincy | Branch | 1,544 | Community | Groundwater |
| Butler Motor Speedway | Branch | 1,200 | Transient non-community | Groundwater |
| Waffle Farm Campground - System 1 | Branch | 1,000 | Transient non-community | Groundwater |
| Waffle Farm Campground - System 2 | Branch | 1,000 | Transient non-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, “Coldwater, PWSID MI0001500, Michigan”, https://aquacensus.com/water-systems/michigan/coldwater-mi0001500 (data as of October 1, 2026).