Public water system · MI0004098
ActiveMhog Sewer & Water Authority
At a glance
Mhog Sewer & Water Authority (PWSID MI0004098) is an active community water system in Livingston County, Michigan. It reports serving 17,046 people through 6,088 service connections. Its primary water source is groundwater, and EPA lists it as owned by a local government. EPA's records list one violation for this system; it is not health-based, and the most recent began in July 1999.
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
17,046
Service connections
6,088
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Mhog Sewer & Water Authority compare with other water systems in Livingston County?
By EPA's size categories, Mhog Sewer & Water Authority is a large system (10,001 to 100,000 people). Livingston County has 425 active public water systems, and Mhog Sewer & Water Authority is the largest of them by population served. Its population served is about 54 times the county average of 314 people per system, and accounts for 13% of the 133,320 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 Mhog Sewer & Water Authority is about 154% above 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 Mhog Sewer & Water Authority?
EPA lists Mhog 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. 12 of the 425 active systems in Livingston County (2.8%) are also owned by a local government.
Does Mhog Sewer & Water Authority have drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 1999. By type: 1 monitoring and reporting. The contaminant or rule involved is Lead and Copper Rule. EPA lists 1 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 |
|---|---|---|---|---|
| 1999-07-30 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
The one violation in EPA's records.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.
Mhog Sewer & Water Authority: frequently asked questions
Who runs Mhog Sewer & Water Authority?
Mhog Sewer & Water Authority (PWSID MI0004098) is a community water system owned by a local government. It is regulated by the MI state drinking water program.
How many people does Mhog Sewer & Water Authority serve?
Mhog Sewer & Water Authority reports serving 17,046 people through 6,088 service connections in Livingston County, Michigan.
Where does Mhog 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 Mhog Sewer & Water Authority have any drinking water violations?
EPA's records list one violation for this system; it is not health-based, and the most recent began in July 1999. 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 Mhog 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. EPA's records list one violation for this system; it is not health-based, and the most recent began in July 1999. For current results, consult the system's annual water quality report, EPA ECHO, or the MI state drinking water program.
Where can I find Mhog Sewer & Water Authority's water quality report?
As a community water system, Mhog 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 Livingston County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Brighton, City of | Livingston | 10,210 | Community | Groundwater |
| Howell, City of | Livingston | 9,914 | Community | Groundwater |
| Livingston Community Water Authority | Livingston | 4,152 | Community | Groundwater |
| Hartland Township | Livingston | 3,022 | Community | Groundwater |
| Chilson Commons / Kroger | Livingston | 3,000 | Non-transient non-community | Groundwater |
| Fowlerville, Village of | Livingston | 2,951 | 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, “Mhog Sewer & Water Authority, PWSID MI0004098, Michigan”, https://aquacensus.com/water-systems/michigan/mhog-sewer-water-authority-mi0004098 (data as of October 1, 2026).