Public water system · MI2003376
ActiveSanilac Isd
At a glance
Sanilac Isd (PWSID MI2003376) is an active non-transient non-community water system in Sanilac County, Michigan. It reports serving 650 people through 3 service connections. Its primary water source is 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 April 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
650
Service connections
3
Primary source
GW
Groundwater
System type
NTNCWS
Non-transient non-community water system
System record
How does Sanilac Isd compare with other water systems in Sanilac County?
By EPA's size categories, Sanilac Isd is a small system (501 to 3,300 people). Sanilac County has 74 active public water systems. Its population served is about twice the county average of 337 people per system, and accounts for 2.6% of the 24,961 people reported by systems filed under the county. Across Michigan, the 10,599 active systems average 847 people each. Nationally, the average active non-transient non-community water system reports serving 430 people, so Sanilac Isd is about 51% above that figure.
What does “non-transient non-community water system” mean?
A non-transient non-community water system regularly serves at least 25 of the same people for more than six months a year, but not where they live. Schools, factories, office buildings and hospitals with their own supply are typical examples. Michigan has 1,402 active non-transient non-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 Sanilac Isd?
EPA lists Sanilac Isd 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. 60 of the 74 active systems in Sanilac County (81%) are also privately owned.
Does Sanilac Isd have drinking water violations?
Of the 12 most recent violations in EPA's records, one is health-based, and the most recent began in April 2022. The violations listed here began between January 2005 and April 2022. By type: 10 monitoring and reporting, 1 monitoring and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Arsenic (7 of them). EPA lists 10 as resolved, 1 as archived 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. 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. 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 |
|---|---|---|---|---|
| 2022-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Archived |
| 2021-01-01 | Monitoring and reportingInitial Tap Sampling for Pb and Cu · code 51 | Lead and Copper Rulecode 5000 | No | Unaddressed |
| 2018-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2015-12-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2010-08-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2009-03-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2008-09-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2008-02-01 | Monitoring and reportingMonitoring, Regular · code 03 | Arseniccode 1005 | No | Resolved |
| 2006-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitratecode 1040 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | 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.
Sanilac Isd: frequently asked questions
Who runs Sanilac Isd?
Sanilac Isd (PWSID MI2003376) is a non-transient non-community water system privately owned. It is regulated by the MI state drinking water program.
How many people does Sanilac Isd serve?
Sanilac Isd reports serving 650 people through 3 service connections in Sanilac County, Michigan.
Where does Sanilac Isd 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 Sanilac Isd 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 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 Sanilac Isd'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 April 2022. For current results, consult EPA ECHO, or the MI state drinking water program.
Where can I find Sanilac Isd's water quality report?
The annual Consumer Confidence Report requirement applies to community water systems. Sanilac Isd is a non-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 Sanilac County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Worth Township | Sanilac | 3,854 | Community | Purchased surface water |
| Sandusky, City of | Sanilac | 2,679 | Community | Groundwater |
| Croswell, City of | Sanilac | 2,447 | Community | Groundwater |
| Marlette, City of | Sanilac | 1,875 | Community | Groundwater |
| Brown City | Sanilac | 1,316 | Community | Groundwater |
| Lexington, Village of | Sanilac | 1,025 | Community | Surface water |
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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, “Sanilac Isd, PWSID MI2003376, Michigan”, https://aquacensus.com/water-systems/michigan/sanilac-isd-mi2003376 (data as of October 1, 2026).