Public water system · OH5501912
ActiveNorthwoods Mhc
At a glance
Northwoods Mhc (PWSID OH5501912) is an active community water system in Miami County, Ohio. It reports serving 70 people through 56 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, 4 are health-based, and the most recent began in October 2024.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
70
Service connections
56
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Northwoods Mhc compare with other water systems in Miami County?
By EPA's size categories, Northwoods Mhc is a very small system (500 people or fewer). Miami County has 46 active public water systems. Its population served is well below the county average of 1,981 people per system, and accounts for less than 0.1% of the 91,109 people reported by systems filed under the county. Across Ohio, the 3,854 active systems average 2,767 people each. Nationally, the average active community water system reports serving 6,703 people, so Northwoods Mhc 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. Ohio has 1,028 active community water systems, 27% of the state's 3,854 active systems. Groundwater means the system draws its water from wells or springs fed by underground aquifers. 3,446 Ohio systems (89%) list groundwater as their primary source.
Who owns and regulates Northwoods Mhc?
EPA lists Northwoods Mhc as privately owned. The OH state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 36 of the 46 active systems in Miami County (78%) are also privately owned.
Does Northwoods Mhc have drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2024. The violations listed here began between January 2013 and October 2024. By type: 3 contaminant level above the legal limit, 3 monitoring and reporting, 2 public notice, recordkeeping or other, 2 monitoring, 1 reporting and 1 required treatment not met. The contaminant or rule involved most often is Arsenic (3 of them). EPA lists 11 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 |
|---|---|---|---|---|
| 2024-10-17 | ReportingLSL Reporting · code 4G | Lead and Copper Rule Revisionscode 5200 | No | Resolved |
| 2024-10-17 | Required treatment not metLSL Inventory · code 2E | Lead and Copper Rule Revisionscode 5200 | Yes | Resolved |
| 2019-12-30 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2017-04-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2017-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2016-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Arseniccode 1005 | Yes | Resolved |
| 2016-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2016-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2016-04-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2015-12-31 | Monitoring and reportingLead Consumer Notice · code 66 | Lead and Copper Rulecode 5000 | No | Resolved |
| 2015-12-01 | Monitoring and reportingMonitoring, Routine Major (TCR) · code 23 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | 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.
Northwoods Mhc: frequently asked questions
Who runs Northwoods Mhc?
Northwoods Mhc (PWSID OH5501912) is a community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Northwoods Mhc serve?
Northwoods Mhc reports serving 70 people through 56 service connections in Miami County, Ohio.
Where does Northwoods Mhc 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 Northwoods Mhc have any drinking water violations?
Of the 12 most recent violations in EPA's records, 4 are health-based, and the most recent began in October 2024. 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 Northwoods Mhc'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, 4 are health-based, and the most recent began in October 2024. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find Northwoods Mhc's water quality report?
As a community water system, Northwoods Mhc 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 Miami County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Nawa | Miami | 29,974 | Community | Groundwater |
| Troy City Pws | Miami | 26,305 | Community | Groundwater |
| Piqua City Pws | Miami | 20,354 | Community | Surface water |
| West Milton Village Pws | Miami | 4,890 | Community | Purchased groundwater |
| Covington Village Pws | Miami | 2,718 | Community | Groundwater |
| Miami East Schools Pws | Miami | 1,430 | Non-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, “Northwoods Mhc, PWSID OH5501912, Ohio”, https://aquacensus.com/water-systems/ohio/northwoods-mhc-oh5501912 (data as of October 1, 2026).