Public water system · OH4202012
ActiveKnox County Water and Wastewater Pws
At a glance
Knox County Water and Wastewater Pws (PWSID OH4202012) is an active community water system in Knox County, Ohio. It reports serving 7,710 people through 3,109 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 6 violations for this system; none is health-based, and the most recent began in November 2025.
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
7,710
Service connections
3,109
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Knox County Water and Wastewater Pws compare with other water systems in Knox County?
By EPA's size categories, Knox County Water and Wastewater Pws is a medium system (3,301 to 10,000 people). Knox County has 40 active public water systems, and Knox County Water and Wastewater Pws is the 2nd-largest of them by population served. Its population served is about 8.8 times the county average of 877 people per system, and accounts for 22% of the 35,064 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 Knox County Water and Wastewater Pws is about 15% 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. 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 Knox County Water and Wastewater Pws?
EPA lists Knox County Water and Wastewater Pws 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 40 active systems in Knox County (90%) are also privately owned.
Does Knox County Water and Wastewater Pws have drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in November 2025. The violations listed here began between May 2004 and November 2025. By type: 3 public notice, recordkeeping or other and 3 monitoring and reporting. The contaminant or rule involved most often is Consumer Confidence Rule (3 of them). EPA lists 4 as resolved and 2 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 |
|---|---|---|---|---|
| 2025-11-24 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2022-09-21 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2020-11-04 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2004-05-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
All 6 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.
Knox County Water and Wastewater Pws: frequently asked questions
Who runs Knox County Water and Wastewater Pws?
Knox County Water and Wastewater Pws (PWSID OH4202012) is a community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Knox County Water and Wastewater Pws serve?
Knox County Water and Wastewater Pws reports serving 7,710 people through 3,109 service connections in Knox County, Ohio.
Where does Knox County Water and Wastewater Pws 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 Knox County Water and Wastewater Pws have any drinking water violations?
EPA's records list 6 violations for this system; none is health-based, and the most recent began in November 2025. 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 Knox County Water and Wastewater Pws' 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 6 violations for this system; none is health-based, and the most recent began in November 2025. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find Knox County Water and Wastewater Pws' water quality report?
As a community water system, Knox County Water and Wastewater Pws 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 Knox County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Mount Vernon City Pws | Knox | 16,990 | Community | Groundwater |
| Fredericktown Village | Knox | 2,648 | Community | Groundwater |
| Gambier Village Pws | Knox | 2,300 | Community | Purchased groundwater |
| Danville Village Pws | Knox | 994 | Community | Groundwater |
| Rustic Knolls Campground | Knox | 600 | Transient non-community | Groundwater |
| Christ the King Community Church Pws | Knox | 300 | 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, “Knox County Water and Wastewater Pws, PWSID OH4202012, Ohio”, https://aquacensus.com/water-systems/ohio/knox-county-water-and-wastewater-pws-oh4202012 (data as of October 1, 2026).