Public water system · MI0003525
ActiveKalamazoo Lake Sewer & Water Authority
At a glance
Kalamazoo Lake Sewer & Water Authority (PWSID MI0003525) is an active community water system in Allegan County, Michigan. It reports serving 5,000 people through 1,964 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025.
This page covers its drinking water system only; sewer and wastewater service are not part of EPA's drinking water records.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
5,000
Service connections
1,964
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Kalamazoo Lake Sewer & Water Authority compare with other water systems in Allegan County?
By EPA's size categories, Kalamazoo Lake Sewer & Water Authority is a medium system (3,301 to 10,000 people). Allegan County has 302 active public water systems, and Kalamazoo Lake Sewer & Water Authority is the 2nd-largest of them by population served. Its population served is about 15 times the county average of 345 people per system, and accounts for 4.8% 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 Kalamazoo Lake Sewer & Water Authority is about 25% 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 Kalamazoo Lake Sewer & Water Authority?
EPA lists Kalamazoo Lake Sewer & Water Authority 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. 13 of the 302 active systems in Allegan County (4.3%) are also owned by a local government.
Does Kalamazoo Lake Sewer & Water Authority have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in July 2025. The violations listed here began between January 2000 and July 2025. By type: 10 monitoring and reporting, 1 required treatment not met and 1 monitoring. The contaminants or rules involved are Stage 1 Disinfectants and Disinfection Byproducts Rule, Revised Total Coliform Rule, Total trihalomethanes (TTHM) and Haloacetic acids (HAA5). EPA lists 12 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 |
|---|---|---|---|---|
| 2025-07-18 | Required treatment not metTreatment Technique No Certif. Operator · code 12 | Stage 1 Disinfectants and Disinfection Byproducts Rulecode 0400 | Yes | Resolved |
| 2023-02-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2023-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | trans-1,2-Dichloroethylenecode 2979 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Vinyl chloridecode 2976 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | p-Dichlorobenzenecode 2969 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Styrenecode 2996 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Xylenes, Totalcode 2955 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Trichloroethylenecode 2984 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 1,1-Dichloroethylenecode 2977 | No | Resolved |
| 2000-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Chlorobenzenecode 2989 | No | Resolved |
The 12 most recent 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.
Kalamazoo Lake Sewer & Water Authority: frequently asked questions
Who runs Kalamazoo Lake Sewer & Water Authority?
Kalamazoo Lake Sewer & Water Authority (PWSID MI0003525) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Kalamazoo Lake Sewer & Water Authority serve?
Kalamazoo Lake Sewer & Water Authority reports serving 5,000 people through 1,964 service connections in Allegan County, Michigan.
Where does Kalamazoo Lake Sewer & Water Authority 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 Kalamazoo Lake Sewer & Water Authority have any drinking water violations?
Of the 12 most recent violations in EPA's records, one 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 Kalamazoo Lake Sewer & Water Authority'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. Of the 12 most recent violations in EPA's records, one 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 Kalamazoo Lake Sewer & Water Authority's water quality report?
As a community water system, Kalamazoo Lake Sewer & Water Authority 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 |
| 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 |
| Sandy Pines Wilderness Trls #1 | Allegan | 2,500 | 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, “Kalamazoo Lake Sewer & Water Authority, PWSID MI0003525, Michigan”, https://aquacensus.com/water-systems/michigan/kalamazoo-lake-sewer-water-authority-mi0003525 (data as of October 1, 2026).