Public water system · MI2035514
ActiveAmi Marathon
At a glance
Ami Marathon (PWSID MI2035514) is an active transient non-community water system in Cass County, Michigan. It reports serving 50 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
50
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does Ami Marathon compare with other water systems in Cass County?
By EPA's size categories, Ami Marathon is a very small system (500 people or fewer). Cass County has 135 active public water systems. Its population served is well below the county average of 251 people per system, and accounts for 0.1% of the 33,840 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active transient non-community water system reports serving 144 people, so Ami Marathon is about 65% below that figure.
What does “transient non-community water system” mean?
A transient non-community water system serves places where people do not stay long, such as gas stations and campgrounds, and regularly serves at least 25 people a day for at least 60 days a year. Michigan has 7,865 active transient non-community water systems, 74% 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 Ami Marathon?
EPA lists Ami Marathon as privately owned. 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. 130 of the 135 active systems in Cass County (96%) are also privately owned.
Does Ami Marathon have drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 2024. The violations listed here began between July 2014 and July 2024. By type: 2 monitoring, 2 monitoring and reporting and 1 required treatment not met. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 3 as resolved and 2 as archived. 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. Archived means the violation was not marked resolved but is more than five years past the end of the noncompliance period, so it no longer counts toward current compliance status.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2024-07-04 | Required treatment not metTreatment Technique, Level 1 Assessment (RTCR) · code 2A | Revised Total Coliform Rulecode 8000 | Yes | Resolved |
| 2024-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2024-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2015-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2014-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 5 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.
Ami Marathon: frequently asked questions
Who runs Ami Marathon?
Ami Marathon (PWSID MI2035514) is a transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Ami Marathon serve?
Ami Marathon reports serving 50 people through 1 service connection in Cass County, Michigan.
Where does Ami Marathon 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 Ami Marathon have any drinking water violations?
EPA's records list 5 violations for this system; 1 is health-based, and the most recent began in July 2024. 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 Ami Marathon'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 5 violations for this system; 1 is health-based, and the most recent began in July 2024. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Ami Marathon's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Ami Marathon is a transient non-community water system, so it is not required to publish one; like every public water system, it must notify the people it serves about violations under EPA's public notification rules.
Other water systems in Cass County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Dowagiac | Cass | 6,350 | Community | Groundwater |
| Cassopolis | Cass | 1,815 | Community | Groundwater |
| Cass County Water System | Cass | 1,350 | Community | Groundwater |
| Edwardsburg | Cass | 1,260 | Community | Groundwater |
| Marcellus | Cass | 1,198 | Community | Groundwater |
| Howard-Ellis Elementary | Cass | 780 | Non-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, “Ami Marathon, PWSID MI2035514, Michigan”, https://aquacensus.com/water-systems/michigan/ami-marathon-mi2035514 (data as of October 1, 2026).