Public water system · OH6205111
ActiveCarroll Water and Sewer
At a glance
Carroll Water and Sewer (PWSID OH6205111) is an active community water system in Ottawa County, Ohio. It reports serving 2,288 people through 1,436 service connections. Its primary water source is surface water, and EPA lists it as owned by a local government. EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in December 2024.
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
2,288
Service connections
1,436
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Carroll Water and Sewer compare with other water systems in Ottawa County?
By EPA's size categories, Carroll Water and Sewer is a small system (501 to 3,300 people). Ottawa County has 36 active public water systems, and Carroll Water and Sewer is the 6th-largest of them by population served. Its population served is about 74% above the county average of 1,317 people per system, and accounts for 4.8% of the 47,393 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 Carroll Water and Sewer is about 66% 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. 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 Carroll Water and Sewer?
EPA lists Carroll Water and Sewer 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. 8 of the 36 active systems in Ottawa County (22%) are also owned by a local government.
Does Carroll Water and Sewer have drinking water violations?
EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in December 2024. The violations listed here began between January 1999 and December 2024. By type: 5 monitoring and reporting, 2 public notice, recordkeeping or other and 2 contaminant level above the legal limit. The contaminant or rule involved most often is Consumer Confidence Rule (2 of them). EPA lists 8 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 |
|---|---|---|---|---|
| 2024-12-30 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Unaddressed |
| 2022-10-26 | Public notice, recordkeeping or otherConsumer Confidence Report Inadequate Reporting · code 72 | Consumer Confidence Rulecode 7000 | No | Resolved |
| 2017-12-01 | Monitoring and reportingMonitoring, Source Water (LT2) · code 32 | E. colicode 3014 | No | Resolved |
| 2015-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Total trihalomethanes (TTHM)code 2950 | Yes | Resolved |
| 2005-01-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Average · code 02 | Haloacetic acids (HAA5)code 2456 | Yes | Resolved |
| 2002-05-01 | Monitoring and reportingMonitoring, Regular · code 03 | Alachlor (Lasso)code 2051 | No | Resolved |
| 2002-05-01 | Monitoring and reportingMonitoring, Regular · code 03 | Simazinecode 2037 | No | Resolved |
| 2002-05-01 | Monitoring and reportingMonitoring, Regular · code 03 | Atrazinecode 2050 | No | Resolved |
| 1999-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Cyanidecode 1024 | No | Resolved |
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.
Carroll Water and Sewer: frequently asked questions
Who runs Carroll Water and Sewer?
Carroll Water and Sewer (PWSID OH6205111) is a community water system owned by a local government. It is regulated by the OH state drinking water program.
How many people does Carroll Water and Sewer serve?
Carroll Water and Sewer reports serving 2,288 people through 1,436 service connections in Ottawa County, Ohio.
Where does Carroll Water and Sewer 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 Carroll Water and Sewer have any drinking water violations?
EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in December 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 Carroll Water and Sewer'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. EPA's records list 9 violations for this system; 2 are health-based, and the most recent began in December 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 Carroll Water and Sewer's water quality report?
As a community water system, Carroll Water and Sewer 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 Ottawa County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Ottawa County Regional Water District | Ottawa | 20,428 | Community | Surface water |
| Port Clinton City | Ottawa | 6,500 | Community | Purchased surface water |
| Put-in-Bay Village | Ottawa | 5,000 | Community | Surface water |
| Oak Harbor Village | Ottawa | 4,400 | Community | Purchased surface water |
| Genoa Village | Ottawa | 3,110 | Community | Purchased surface water |
| Elmore Village | Ottawa | 1,421 | Community | Purchased surface water |
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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, “Carroll Water and Sewer, PWSID OH6205111, Ohio”, https://aquacensus.com/water-systems/ohio/carroll-water-and-sewer-oh6205111 (data as of October 1, 2026).