Public water system · OH7300003
ActiveNorthwest Regional Water District
At a glance
Northwest Regional Water District (PWSID OH7300003) is an active community water system in Scioto County, Ohio. It reports serving 11,059 people through 5,768 service connections. Its primary water source is purchased groundwater, and EPA lists it as owned by a local government. EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in February 1997.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
11,059
Service connections
5,768
Primary source
GWP
Purchased groundwater
System type
CWS
Community water system
System record
How does Northwest Regional Water District compare with other water systems in Scioto County?
By EPA's size categories, Northwest Regional Water District is a large system (10,001 to 100,000 people). Scioto County has 17 active public water systems, and Northwest Regional Water District is the 3rd-largest of them by population served. Its population served is about 126% above the county average of 4,896 people per system, and accounts for 13% of the 83,235 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 Northwest Regional Water District is about 65% 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. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own. 114 Ohio systems (3%) list purchased groundwater as their primary source.
Who owns and regulates Northwest Regional Water District?
EPA lists Northwest Regional Water District 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. 14 of the 17 active systems in Scioto County (82%) are also owned by a local government.
Does Northwest Regional Water District have drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in February 1997. The violations listed here began between October 1992 and February 1997. By type: 2 contaminant level above the legal limit and 1 monitoring and reporting. The contaminant or rule involved most often is Total coliform bacteria (TCR) (3 of them). EPA lists 3 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 |
|---|---|---|---|---|
| 1997-02-01 | Monitoring and reportingMonitoring, Routine Minor (TCR) · code 24 | Total coliform bacteria (TCR)code 3100 | No | Resolved |
| 1992-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Monthly (TCR) · code 22 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
| 1992-10-01 | Contaminant level above the legal limitMaximum Contaminant Level Violation, Acute (TCR) · code 21 | Total coliform bacteria (TCR)code 3100 | Yes | Resolved |
All 3 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.
Northwest Regional Water District: frequently asked questions
Who runs Northwest Regional Water District?
Northwest Regional Water District (PWSID OH7300003) is a community water system owned by a local government. It is regulated by the OH state drinking water program.
How many people does Northwest Regional Water District serve?
Northwest Regional Water District reports serving 11,059 people through 5,768 service connections in Scioto County, Ohio.
Where does Northwest Regional Water District get its water?
EPA SDWIS lists this system's primary water source as purchased groundwater. Purchased groundwater means the system buys groundwater from another public water system rather than drawing its own.
Does Northwest Regional Water District have any drinking water violations?
EPA's records list 3 violations for this system; 2 are health-based, and the most recent began in February 1997. 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 Northwest Regional Water District'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 3 violations for this system; 2 are health-based, and the most recent began in February 1997. For current results, consult the system's annual water quality report, EPA ECHO, or the OH state drinking water program.
Where can I find Northwest Regional Water District's water quality report?
As a community water system, Northwest Regional Water District 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 Scioto County
| Water system | County | Population served | Type | Source |
|---|---|---|---|---|
| Portsmouth City | Scioto | 40,475 | Community | Surface water |
| Scioto Co. Regional Water District #1 | Scioto | 13,820 | Community | Groundwater |
| Scioto Water Inc..-Rose Hill | Scioto | 8,861 | Community | Groundwater |
| Scioto Water Inc..-Sugar Camp | Scioto | 6,458 | Community | Groundwater |
| Scioto Water Inc.. - Pond Run | Scioto | 845 | Community | Purchased surface water |
| Scioto Water Inc..-Sr125 | Scioto | 537 | 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, “Northwest Regional Water District, PWSID OH7300003, Ohio”, https://aquacensus.com/water-systems/ohio/northwest-regional-water-district-oh7300003 (data as of October 1, 2026).