Public water system · MI0005990
ActiveSebewaing Light & Water
At a glance
Sebewaing Light & Water (PWSID MI0005990) is an active community water system in Huron County, Michigan. It reports serving 1,721 people through 1,010 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in January 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
1,721
Service connections
1,010
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Sebewaing Light & Water compare with other water systems in Huron County?
By EPA's size categories, Sebewaing Light & Water is a small system (501 to 3,300 people). Huron County has 101 active public water systems, and Sebewaing Light & Water is the 3rd-largest of them by population served. Its population served is about 5.3 times the county average of 324 people per system, and accounts for 5.3% of the 32,763 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 Sebewaing Light & Water 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 Sebewaing Light & Water?
EPA lists Sebewaing Light & Water 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. 15 of the 101 active systems in Huron County (15%) are also owned by a local government.
Does Sebewaing Light & Water have drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in January 2019. The violations listed here began between January 1993 and January 2019. By type: 6 monitoring and reporting and 1 contaminant level above the legal limit. The contaminant or rule involved most often is Combined Radium (-226 and -228) (2 of them). EPA lists 4 as resolved and 3 as archived. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-228code 4030 | No | Archived |
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 2019-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Radium-226code 4020 | No | Archived |
| 2017-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Gross alpha (excluding radon and uranium)code 4000 | No | Resolved |
| 2017-10-01 | Monitoring and reportingMonitoring, Regular · code 03 | Combined Radium (-226 and -228)code 4010 | No | Resolved |
| 1999-06-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1993-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Nitrate-Nitritecode 1038 | No | Archived |
All 7 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.
Sebewaing Light & Water: frequently asked questions
Who runs Sebewaing Light & Water?
Sebewaing Light & Water (PWSID MI0005990) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Sebewaing Light & Water serve?
Sebewaing Light & Water reports serving 1,721 people through 1,010 service connections in Huron County, Michigan.
Where does Sebewaing Light & Water 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 Sebewaing Light & Water have any drinking water violations?
EPA's records list 7 violations for this system; 1 is health-based, and the most recent began in January 2019. 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 Sebewaing Light & Water'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 7 violations for this system; 1 is health-based, and the most recent began in January 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Sebewaing Light & Water's water quality report?
As a community water system, Sebewaing Light & Water 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 Huron County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Bad Axe | Huron | 3,129 | Community | Purchased surface water |
| Caseville Township | Huron | 2,005 | Community | Purchased surface water |
| Harbor Beach, City of | Huron | 1,604 | Community | Surface water |
| Pigeon, Village of | Huron | 1,208 | Community | Purchased surface water |
| Port Hope-Gore-Rubicon U. A. | Huron | 1,058 | Community | Purchased surface water |
| Port Austin Area Sewer & Water | Huron | 1,004 | Community | Purchased surface water |
Related pages
Working with water-system records? Pro adds alerts, change history and CSV export ($49/mo); Enterprise adds full national files, the API and an MCP server for AI tools.
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, “Sebewaing Light & Water, PWSID MI0005990, Michigan”, https://aquacensus.com/water-systems/michigan/sebewaing-light-water-mi0005990 (data as of October 1, 2026).