Public water system · MI0001552
ActiveColony Bay Condominiums
At a glance
Colony Bay Condominiums (PWSID MI0001552) is an active community water system in Cass County, Michigan. It reports serving 75 people through 25 service connections. Its primary water source is purchased groundwater, and EPA lists it as privately owned. Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2006.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
75
Service connections
25
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Colony Bay Condominiums compare with other water systems in Cass County?
By EPA's size categories, Colony Bay Condominiums 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 0.2% 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 community water system reports serving 6,703 people, so Colony Bay Condominiums 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 42 Michigan systems (0.4%) list purchased groundwater as their primary source.
Who owns and regulates Colony Bay Condominiums?
EPA lists Colony Bay Condominiums 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 Colony Bay Condominiums have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in January 2006. The violations listed here began between September 1991 and January 2006. By type: 10 monitoring and reporting, 1 contaminant level above the legal limit and 1 public notice, recordkeeping or other. The contaminant or rule involved most often is Total coliform bacteria (TCR) (10 of them). EPA lists 8 as archived and 4 as resolved. 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. 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 |
|---|---|---|---|---|
| 2006-01-23 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2005-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 1999-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1999-07-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1995-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1994-04-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-11-01 | Monitoring and reportingMonitoring, Repeat Major (TCR) · code 25 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-10-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1993-02-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-11-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
| 1991-09-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Archived |
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.
Colony Bay Condominiums: frequently asked questions
Who runs Colony Bay Condominiums?
Colony Bay Condominiums (PWSID MI0001552) is a community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Colony Bay Condominiums serve?
Colony Bay Condominiums reports serving 75 people through 25 service connections in Cass County, Michigan.
Where does Colony Bay Condominiums get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Colony Bay Condominiums 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 January 2006. 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 Colony Bay Condominiums' 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 January 2006. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Colony Bay Condominiums' water quality report?
As a community water system, Colony Bay Condominiums 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 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, “Colony Bay Condominiums, PWSID MI0001552, Michigan”, https://aquacensus.com/water-systems/michigan/colony-bay-condominiums-mi0001552 (data as of October 1, 2026).