Public water system · MI2057081
ActiveSt. Joseph Catholic - Dexter
At a glance
St. Joseph Catholic - Dexter (PWSID MI2057081) is an active transient non-community water system in Washtenaw County, Michigan. It reports serving 500 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 4 violations for this system; none is health-based, and the most recent began in April 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
500
Service connections
1
Primary source
GW
Groundwater
System type
TNCWS
Transient non-community water system
System record
How does St. Joseph Catholic - Dexter compare with other water systems in Washtenaw County?
By EPA's size categories, St. Joseph Catholic - Dexter is a very small system (500 people or fewer). Washtenaw County has 262 active public water systems. Its population served is about 56% below the county average of 1,147 people per system, and accounts for 0.2% of the 300,406 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 St. Joseph Catholic - Dexter is about 3.5 times 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 St. Joseph Catholic - Dexter?
EPA lists St. Joseph Catholic - Dexter 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. 229 of the 262 active systems in Washtenaw County (87%) are also privately owned.
Does St. Joseph Catholic - Dexter have drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in April 2022. The violations listed here began between April 2016 and April 2022. By type: 3 monitoring and 1 monitoring and reporting. The contaminant or rule involved most often is Revised Total Coliform Rule (3 of them). EPA lists 2 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 |
|---|---|---|---|---|
| 2022-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2022-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Archived |
| 2020-01-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2016-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
All 4 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.
St. Joseph Catholic - Dexter: frequently asked questions
Who runs St. Joseph Catholic - Dexter?
St. Joseph Catholic - Dexter (PWSID MI2057081) is a transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does St. Joseph Catholic - Dexter serve?
St. Joseph Catholic - Dexter reports serving 500 people through 1 service connection in Washtenaw County, Michigan.
Where does St. Joseph Catholic - Dexter 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 St. Joseph Catholic - Dexter have any drinking water violations?
EPA's records list 4 violations for this system; none is health-based, and the most recent began in April 2022. 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 St. Joseph Catholic - Dexter'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 4 violations for this system; none is health-based, and the most recent began in April 2022. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find St. Joseph Catholic - Dexter's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. St. Joseph Catholic - Dexter 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 Washtenaw County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ann Arbor | Washtenaw | 123,851 | Community | Surface water |
| Ypsilanti Community Utility Authority | Washtenaw | 53,988 | Community | Purchased surface water |
| Pittsfield Township | Washtenaw | 24,500 | Community | Purchased surface water |
| Saline | Washtenaw | 9,158 | Community | Groundwater |
| Scio Township | Washtenaw | 8,500 | Community | Purchased surface water |
| Milan | Washtenaw | 7,363 | 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, “St. Joseph Catholic - Dexter, PWSID MI2057081, Michigan”, https://aquacensus.com/water-systems/michigan/st-joseph-catholic-dexter-mi2057081 (data as of October 1, 2026).