Public water system · OH3000111
ActiveCambridge, City of
At a glance
City of Cambridge (PWSID OH3000111) is an active community water system in Guernsey County, Ohio. It reports serving 10,520 people through 6,503 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in June 2019.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
10,520
Service connections
6,503
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does City of Cambridge compare with other water systems in Guernsey County?
By EPA's size categories, City of Cambridge is a large system (10,001 to 100,000 people). Guernsey County has 13 active public water systems, and City of Cambridge is the largest of them by population served. Its population served is about 4.2 times the county average of 2,493 people per system, and accounts for 32% of the 32,410 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 City of Cambridge is about 57% 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. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 102 Ohio systems (2.6%) list surface water as their primary source.
Who owns and regulates City of Cambridge?
EPA lists City of Cambridge as owned by a local government. 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. 6 of the 13 active systems in Guernsey County (46%) are also owned by a local government.
Does City of Cambridge have drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in June 2019. The violations listed here began between January 2003 and June 2019. By type: 4 contaminant level above the legal limit, 4 monitoring and reporting, 2 required treatment not met and 2 public notice, recordkeeping or other. The contaminant or rule involved most often is Total trihalomethanes (TTHM) (4 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 |
|---|---|---|---|---|
| 2019-06-01 | Required treatment not metTreatment Technique (SWTR and GWR) · code 41 | Surface Water Treatment Rulecode 0200 | Yes | Resolved |
| 2018-11-07 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2017-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2016-09-17 | Public notice, recordkeeping or otherPublic Notification Violation for NPDWR Violation · code 75 | Public Noticecode 7500 | No | Resolved |
| 2016-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2013-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2007-06-01 | Required treatment not metSingle Turbidity Exceed (Enhanced SWTR) · code 43 | Interim Enhanced Surface Water Treatment Rulecode 0300 | Yes | Resolved |
| 2007-06-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2005-09-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 2003-11-01 | Monitoring and reportingMonitoring, Turbidity (Enhanced SWTR) · code 38 | Interim Enhanced Surface Water Treatment Rulecode 0300 | No | Resolved |
| 2003-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | 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.
City of Cambridge: frequently asked questions
Who runs City of Cambridge?
City of Cambridge (PWSID OH3000111) is a community water system owned by a local government. It is regulated by the OH state drinking water program.
How many people does City of Cambridge serve?
City of Cambridge reports serving 10,520 people through 6,503 service connections in Guernsey County, Ohio.
Where does City of Cambridge get its water?
EPA SDWIS lists this system's primary water source as surface water. Surface water means the system draws its water from rivers, lakes, streams or reservoirs.
Does City of Cambridge have any drinking water violations?
Of the 12 most recent violations in EPA's records, 6 are health-based, and the most recent began in June 2019. 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 City of Cambridge'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, 6 are health-based, and the most recent began in June 2019. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find City of Cambridge's water quality report?
As a community water system, City of Cambridge 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 Guernsey County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Guernsey Co. Water Dept. | Guernsey | 8,891 | Community | Purchased surface water |
| Byesville | Guernsey | 5,104 | Community | Groundwater under influence of surface water |
| Western Guernsey Regional Water District | Guernsey | 3,225 | Community | Purchased surface water |
| Salt Fork Utility Co. | Guernsey | 2,054 | Transient non-community | Groundwater |
| Quaker City | Guernsey | 750 | Community | Purchased surface water |
| Pike'S Peak Campground | Guernsey | 700 | Transient non-community | Purchased 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, “Cambridge, City of, PWSID OH3000111, Ohio”, https://aquacensus.com/water-systems/ohio/cambridge-city-of-oh3000111 (data as of October 1, 2026).