Public water system · MI0001170
ActiveCarson City
At a glance
Carson City (PWSID MI0001170) is an active community water system in Montcalm County, Michigan. It reports serving 3,322 people through 525 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
3,322
Service connections
525
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Carson City compare with other water systems in Montcalm County?
By EPA's size categories, Carson City is a medium system (3,301 to 10,000 people). Montcalm County has 160 active public water systems, and Carson City is the 2nd-largest of them by population served. Its population served is about 11 times the county average of 316 people per system, and accounts for 6.6% of the 50,482 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 Carson City is about half of 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 Carson City?
EPA lists Carson 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. 8 of the 160 active systems in Montcalm County (5%) are also owned by a local government.
Does Carson City have drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2025. The violations listed here began between June 1994 and July 2025. By type: 5 monitoring and reporting, 3 public notice, recordkeeping or other and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Consumer Confidence Rule (3 of them). EPA lists 9 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 |
|---|---|---|---|---|
| 2025-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2024-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Uraniumcode 4006 | No | Resolved |
| 2022-10-11 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2022-08-28 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2021-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2020-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2020-09-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2018-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1994-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 9 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.
Carson City: frequently asked questions
Who runs Carson City?
Carson City (PWSID MI0001170) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Carson City serve?
Carson City reports serving 3,322 people through 525 service connections in Montcalm County, Michigan.
Where does Carson City 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 Carson City have any drinking water violations?
EPA's records list 9 violations for this system; 1 is health-based, and the most recent began in July 2025. 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 Carson 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 9 violations for this system; 1 is health-based, and the most recent began in July 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Carson City's water quality report?
As a community water system, Carson 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 Montcalm County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Greenville | Montcalm | 8,816 | Community | Groundwater |
| Howard City | Montcalm | 1,800 | Community | Groundwater |
| Montcalm Community College | Montcalm | 1,484 | Community | Groundwater |
| Stanton | Montcalm | 1,417 | Community | Groundwater |
| Montcalm Community College | Montcalm | 1,400 | Non-transient non-community | Groundwater |
| Edmore | Montcalm | 1,256 | 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, “Carson City, PWSID MI0001170, Michigan”, https://aquacensus.com/water-systems/michigan/carson-city-mi0001170 (data as of October 1, 2026).