Public water system · OH3600514
ActiveHighland County Water Company, Inc..
At a glance
Highland County Water Company, Inc.. (PWSID OH3600514) is an active community water system in Highland County, Ohio. It reports serving 28,421 people through 11,016 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, 2 are health-based, and the most recent began in July 2022.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
28,421
Service connections
11,016
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Highland County Water Company, Inc.. compare with other water systems in Highland County?
By EPA's size categories, Highland County Water Company, Inc.. is a large system (10,001 to 100,000 people). Highland County has 9 active public water systems, and Highland County Water Company, Inc.. is the largest of them by population served. Its population served is about 6 times the county average of 4,766 people per system, and accounts for 66% of the 42,890 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 Highland County Water Company, Inc.. is about 4.2 times 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 Highland County Water Company, Inc..?
EPA lists Highland County Water Company, Inc.. 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. 5 of the 9 active systems in Highland County (56%) are also privately owned.
Does Highland County Water Company, Inc.. have drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 2022. The violations listed here began between August 1988 and July 2022. By type: 9 monitoring and reporting, 1 public notice, recordkeeping or other, 1 contaminant level above the legal limit and 1 required treatment not met. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 7 as resolved and 5 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 |
|---|---|---|---|---|
| 2022-07-01 | Public notice, recordkeeping or otherConsumer Confidence Report Complete Failure to Report · code 71 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2014-05-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2011-06-01 | Monitoring and reportingMonitoring, Source Water (GWR) · code 34 | E. colicode 3014 | No | Resolved |
| 2011-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2008-10-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 2001-12-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1993-07-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 1988-08-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4-Dcode 2105 | No | Archived |
| 1988-08-01 | Monitoring and reportingMonitoring, Regular · code 03 | 2,4,5-TP (Silvex)code 2110 | No | Archived |
| 1988-08-01 | Monitoring and reportingMonitoring, Regular · code 03 | Lindane (gamma-BHC)code 2010 | No | Archived |
| 1988-08-01 | Monitoring and reportingMonitoring, Regular · code 03 | Methoxychlorcode 2015 | No | Archived |
| 1988-08-01 | Monitoring and reportingMonitoring, Regular · code 03 | Toxaphenecode 2020 | No | Archived |
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.
Highland County Water Company, Inc..: frequently asked questions
Who runs Highland County Water Company, Inc..?
Highland County Water Company, Inc.. (PWSID OH3600514) is a community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Highland County Water Company, Inc.. serve?
Highland County Water Company, Inc.. reports serving 28,421 people through 11,016 service connections in Highland County, Ohio.
Where does Highland County Water Company, Inc.. 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 Highland County Water Company, Inc.. have any drinking water violations?
Of the 12 most recent violations in EPA's records, 2 are health-based, and the most recent began in July 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 Highland County Water Company, Inc..'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, 2 are health-based, and the most recent began in July 2022. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find Highland County Water Company, Inc..'s water quality report?
As a community water system, Highland County Water Company, Inc.. 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 Highland County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Hillsboro City | Highland | 6,650 | Community | Surface water |
| Greenfield Village Pws | Highland | 4,600 | Community | Groundwater |
| Lynchburg Village Pws | Highland | 1,515 | Community | Groundwater |
| Leesburg Village | Highland | 1,315 | Community | Groundwater |
| Corner Market LLC Pws | Highland | 136 | Transient non-community | Groundwater |
| Faith and Light Mennonite Church | Highland | 113 | 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, “Highland County Water Company, Inc.., PWSID OH3600514, Ohio”, https://aquacensus.com/water-systems/ohio/highland-county-water-company-inc-oh3600514 (data as of October 1, 2026).