Public water system · MI0001845
ActiveDorr-Leighton
At a glance
Dorr-Leighton (PWSID MI0001845) is an active community water system in Allegan County, Michigan. It reports serving 500 people through 256 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list one violation for this system; it is not health-based, and the most recent began in June 2004.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
500
Service connections
256
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Dorr-Leighton compare with other water systems in Allegan County?
By EPA's size categories, Dorr-Leighton is a very small system (500 people or fewer). Allegan County has 302 active public water systems. Its population served is about 45% above the county average of 345 people per system, and accounts for 0.5% of the 104,093 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 Dorr-Leighton 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. 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 Dorr-Leighton?
EPA lists Dorr-Leighton 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. 285 of the 302 active systems in Allegan County (94%) are also privately owned.
Does Dorr-Leighton have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in June 2004. By type: 1 monitoring and reporting. The contaminant or rule involved is Total coliform bacteria (TCR). 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 |
|---|---|---|---|---|
| 2004-06-01 | Monitoring and reportingMonitoring, Repeat Minor (TCR) · code 26 | Total coliform bacteria (TCR)code 3100 | 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.
Dorr-Leighton: frequently asked questions
Who runs Dorr-Leighton?
Dorr-Leighton (PWSID MI0001845) is a community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Dorr-Leighton serve?
Dorr-Leighton reports serving 500 people through 256 service connections in Allegan County, Michigan.
Where does Dorr-Leighton 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 Dorr-Leighton 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 June 2004. 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 Dorr-Leighton'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 June 2004. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Dorr-Leighton's water quality report?
As a community water system, Dorr-Leighton 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 Allegan County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Allegan | Allegan | 5,930 | Community | Groundwater |
| Kalamazoo Lake Sewer & Water Authority | Allegan | 5,000 | Community | Groundwater |
| Wayland | Allegan | 4,435 | Community | Groundwater |
| Otsego | Allegan | 4,120 | Community | Groundwater |
| Plainwell | Allegan | 3,998 | Community | Groundwater |
| Bittersweet Ski Resort Inc. | Allegan | 3,500 | 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, “Dorr-Leighton, PWSID MI0001845, Michigan”, https://aquacensus.com/water-systems/michigan/dorr-leighton-mi0001845 (data as of October 1, 2026).