Public water system · MI0003435
ActiveLake Isabella Water Dist. #1
At a glance
Lake Isabella Water Dist. #1 (PWSID MI0003435) is an active community water system in Isabella County, Michigan. It reports serving 327 people through 109 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2025.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
327
Service connections
109
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Lake Isabella Water Dist. #1 compare with other water systems in Isabella County?
By EPA's size categories, Lake Isabella Water Dist. #1 is a very small system (500 people or fewer). Isabella County has 83 active public water systems. Its population served is about 44% below the county average of 581 people per system, and accounts for 0.7% of the 48,199 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 Lake Isabella Water Dist. #1 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 Lake Isabella Water Dist. #1?
EPA lists Lake Isabella Water Dist. #1 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. 5 of the 83 active systems in Isabella County (6%) are also owned by a local government.
Does Lake Isabella Water Dist. #1 have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in July 2025. The violations listed here began between July 2001 and July 2025. By type: 4 monitoring and reporting and 2 public notice, recordkeeping or other. The contaminants or rules involved are Lead and Copper Rule, Total trihalomethanes (TTHM), Haloacetic acids (HAA5) and Public Notice. EPA lists 5 as resolved and 1 as unaddressed. 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. Unaddressed means the violation is not resolved or archived and is not yet covered by formal enforcement.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2025-07-11 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2009-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2009-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2006-04-15 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2005-03-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
All 6 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.
Lake Isabella Water Dist. #1: frequently asked questions
Who runs Lake Isabella Water Dist. #1?
Lake Isabella Water Dist. #1 (PWSID MI0003435) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Lake Isabella Water Dist. #1 serve?
Lake Isabella Water Dist. #1 reports serving 327 people through 109 service connections in Isabella County, Michigan.
Where does Lake Isabella Water Dist. #1 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 Lake Isabella Water Dist. #1 have any drinking water violations?
EPA's records list 6 violations for this system; none 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 Lake Isabella Water Dist. #1'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 6 violations for this system; none 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 Lake Isabella Water Dist. #1's water quality report?
As a community water system, Lake Isabella Water Dist. #1 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 Isabella County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mount Pleasant | Isabella | 21,688 | Community | Surface water |
| Union Township | Isabella | 12,927 | Community | Groundwater |
| Shepherd, Village of | Isabella | 1,515 | Community | Groundwater |
| Weidman Ez Mart | Isabella | 800 | Transient non-community | Groundwater |
| Beal City Public Schools | Isabella | 785 | Non-transient non-community | Groundwater |
| Outdoor Adventures- Mt Pleasant | Isabella | 640 | 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, “Lake Isabella Water Dist. #1, PWSID MI0003435, Michigan”, https://aquacensus.com/water-systems/michigan/lake-isabella-water-dist-1-mi0003435 (data as of October 1, 2026).