Public water system · MI2007253

Active

Mason Co Eastern Hs

At a glance

Mason Co Eastern Hs (PWSID MI2007253) is an active non-transient non-community water system in Mason County, Michigan. It reports serving 480 people through 1 service connection. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in January 2020.

Dataset updated October 2026 . Source: EPA SDWIS/ECHO public records.

Population served

480

Service connections

Primary source

Groundwater

System type

NTNCWS

Non-transient non-community water system

System record

PWSIDMI2007253

System typeNon-transient non-community water system

Activity statusActive

Population served480

Service connections1

Primary water sourceGroundwater

Owner typePrivate

Primacy agencyMI state drinking water program

City served—

StateMichigan

ZIP—

CountyMason County

How does Mason Co Eastern Hs compare with other water systems in Mason County?

By EPA's size categories, Mason Co Eastern Hs is a very small system (500 people or fewer). Mason County has 83 active public water systems. Its population served is about 65% above the county average of 291 people per system, and accounts for 2% of the 24,180 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 Mason Co Eastern Hs is about 12% 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 Mason Co Eastern Hs?

EPA lists Mason Co Eastern Hs 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. 74 of the 83 active systems in Mason County (89%) are also privately owned.

Does Mason Co Eastern Hs have drinking water violations?

EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in January 2020. The violations listed here began between October 1994 and January 2020. By type: 5 monitoring and reporting, 3 contaminant level above the legal limit and 1 monitoring. The contaminant or rule involved most often is Lead and Copper Rule (3 of them). EPA lists 8 as resolved and 1 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
2020-01-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2018-01-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2017-10-01	MonitoringMonitoring, Routine (RTCR) · code 3A	Revised Total Coliform Rulecode 8000	No	Resolved
2017-01-01	Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52	Lead and Copper Rulecode 5000	No	Resolved
2017-01-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
1998-04-01	Monitoring and reportingMonitoring, Regular · code 03	Nitratecode 1040	No	Resolved
1996-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02	Nitratecode 1040	Yes	Resolved
1995-01-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Resolved
1994-10-01	Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22	Total coliform bacteria (TCR)code 3100	Yes	Archived

All 9 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.

Mason Co Eastern Hs: frequently asked questions

Who runs Mason Co Eastern Hs?

Mason Co Eastern Hs (PWSID MI2007253) is a non-transient non-community water system privately owned. It is regulated by the MI state drinking water program.

How many people does Mason Co Eastern Hs serve?

Mason Co Eastern Hs reports serving 480 people through 1 service connection in Mason County, Michigan.

Where does Mason Co Eastern Hs 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 Mason Co Eastern Hs have any drinking water violations?

EPA's records list 9 violations for this system; 3 are health-based, and the most recent began in January 2020. 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 Mason Co Eastern Hs' 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 9 violations for this system; 3 are health-based, and the most recent began in January 2020. For current results, consult EPA ECHO, or the MI state drinking water program.

Where can I find Mason Co Eastern Hs' water quality report?

The annual Consumer Confidence Report requirement applies to community water systems. Mason Co Eastern Hs 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 Mason County

Water system	County	Population served	Type	Source
Ludington	Mason	8,184	Community	Surface water
Ludington State Park Cg	Mason	1,700	Transient non-community	Groundwater
Scottville, City of	Mason	1,536	Community	Purchased surface water
Tamarac Village	Mason	873	Community	Groundwater
Mdot - Ludington Rest Area	Mason	700	Transient non-community	Groundwater
Lamans Landing	Mason	500	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, “Mason Co Eastern Hs, PWSID MI2007253, Michigan”, https://aquacensus.com/water-systems/michigan/mason-co-eastern-hs-mi2007253 (data as of October 1, 2026).