Public water system · OH2502412
ActiveAqua Ohio - Blacklick
At a glance
Aqua Ohio - Blacklick (PWSID OH2502412) is an active community water system in Franklin County, Ohio. It reports serving 7,100 people through 2,898 service connections. Its primary water source is groundwater, and EPA lists it as privately owned. EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in February 1996.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
7,100
Service connections
2,898
Primary source
GW
Groundwater
System type
CWS
Community water system
System record
How does Aqua Ohio - Blacklick compare with other water systems in Franklin County?
By EPA's size categories, Aqua Ohio - Blacklick is a medium system (3,301 to 10,000 people). Franklin County has 90 active public water systems. Its population served is about 57% below the county average of 16,670 people per system, and accounts for 0.5% of the 1,500,285 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 Aqua Ohio - Blacklick is roughly in line with 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 Aqua Ohio - Blacklick?
EPA lists Aqua Ohio - Blacklick 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. 71 of the 90 active systems in Franklin County (79%) are also privately owned.
Does Aqua Ohio - Blacklick have drinking water violations?
EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in February 1996. The violations listed here began between July 1992 and February 1996. By type: 4 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (4 of them). EPA lists 5 as resolved. 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.
| Began | Violation | Contaminant or rule | Health-based | Status |
|---|---|---|---|---|
| 1996-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1996-02-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1995-01-01 | Monitoring and reportingFollow-up Or Routine LCR Tap M/R · code 52 | Lead and Copper Rulecode 5000 | No | Resolved |
| 1992-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-07-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 5 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.
Aqua Ohio - Blacklick: frequently asked questions
Who runs Aqua Ohio - Blacklick?
Aqua Ohio - Blacklick (PWSID OH2502412) is a community water system privately owned. It is regulated by the OH state drinking water program.
How many people does Aqua Ohio - Blacklick serve?
Aqua Ohio - Blacklick reports serving 7,100 people through 2,898 service connections in Franklin County, Ohio.
Where does Aqua Ohio - Blacklick 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 Aqua Ohio - Blacklick have any drinking water violations?
EPA's records list 5 violations for this system; 4 are health-based, and the most recent began in February 1996. 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 Aqua Ohio - Blacklick'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 5 violations for this system; 4 are health-based, and the most recent began in February 1996. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find Aqua Ohio - Blacklick's water quality report?
As a community water system, Aqua Ohio - Blacklick 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 Franklin County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Columbus Public Water System | Franklin | 1,305,946 | Community | Surface water |
| Westerville City Pws | Franklin | 39,000 | Community | Surface water |
| Reynoldsburg City Pws | Franklin | 37,847 | Community | Purchased surface water |
| Gahanna City Pws | Franklin | 33,258 | Community | Purchased surface water |
| Bexley City Pws | Franklin | 14,250 | Community | Purchased surface water |
| Jefferson Water and Sewer District Pws | Franklin | 11,294 | 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, “Aqua Ohio - Blacklick, PWSID OH2502412, Ohio”, https://aquacensus.com/water-systems/ohio/aqua-ohio-blacklick-oh2502412 (data as of October 1, 2026).