Public water system · KY0590220
ActiveNorthern Kentucky Water District
At a glance
Northern Kentucky Water District (PWSID KY0590220) is an active community water system in Kenton County, Kentucky. It reports serving 259,949 people through 90,310 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, none is health-based, and the most recent began in May 2016.
Dataset updated . Source: EPA SDWIS/ECHO public records.
Population served
259,949
Service connections
90,310
Primary source
SW
Surface water
System type
CWS
Community water system
System record
How does Northern Kentucky Water District compare with other water systems in Kenton County?
By EPA's size categories, Northern Kentucky Water District is a very large system (more than 100,000 people). Kenton County has 1 active public water system, and Northern Kentucky Water District is the largest of them by population served. Its population served is roughly in line with the county average of 259,949 people per system, and accounts for 100% of the 259,949 people reported by systems filed under the county. Across Kentucky, the 437 active systems average 11,699 people each. Nationally, the average active community water system reports serving 6,703 people, so Northern Kentucky Water District is about 39 times 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. Kentucky has 371 active community water systems, 85% of the state's 437 active systems. Surface water means the system draws its water from rivers, lakes, streams or reservoirs. 135 Kentucky systems (31%) list surface water as their primary source.
Who owns and regulates Northern Kentucky Water District?
EPA lists Northern Kentucky Water District as owned by a local government. The KY state drinking water program is its primacy agency, the regulator with primary enforcement responsibility for the system under the Safe Drinking Water Act. 1 of the 1 active systems in Kenton County (100%) are also owned by a local government.
Does Northern Kentucky Water District have drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2016. The violations listed here began between January 2005 and May 2016. By type: 11 monitoring and reporting and 1 monitoring. The contaminant or rule involved most often is Pentachlorophenol (2 of them). EPA lists 12 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 |
|---|---|---|---|---|
| 2016-05-01 | MonitoringMonitoring, Routine (RTCR) · code 3A | Revised Total Coliform Rulecode 8000 | No | Resolved |
| 2013-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2008-04-01 | Monitoring and reportingMonitoring, Regular · code 03 | Pentachlorophenolcode 2326 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Haloacetic acids (HAA5)code 2456 | No | Resolved |
| 2007-10-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Total trihalomethanes (TTHM)code 2950 | No | Resolved |
| 2007-07-01 | Monitoring and reportingMonitoring and Reporting (DBP) · code 27 | Carbon, totalcode 2920 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Carbofurancode 2046 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Aldicarb sulfonecode 2044 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Aldicarbcode 2047 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Di(2-ethylhexyl) adipatecode 2035 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Hexachlorocyclopentadienecode 2042 | No | Resolved |
| 2005-01-01 | Monitoring and reportingMonitoring, Regular · code 03 | Endothallcode 2033 | No | 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.
Northern Kentucky Water District: frequently asked questions
Who runs Northern Kentucky Water District?
Northern Kentucky Water District (PWSID KY0590220) is a community water system owned by a local government. It is regulated by the KY state drinking water program.
How many people does Northern Kentucky Water District serve?
Northern Kentucky Water District reports serving 259,949 people through 90,310 service connections in Kenton County, Kentucky.
Where does Northern Kentucky Water District 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 Northern Kentucky Water District have any drinking water violations?
Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2016. 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 Northern Kentucky 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. Of the 12 most recent violations in EPA's records, none is health-based, and the most recent began in May 2016. For current results, consult the system's annual water quality report, EPA ECHO, or the KY state drinking water program.
Where can I find Northern Kentucky Water District's water quality report?
As a community water system, Northern Kentucky 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.
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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, “Northern Kentucky Water District, PWSID KY0590220, Kentucky”, https://aquacensus.com/water-systems/kentucky/northern-kentucky-water-district-ky0590220 (data as of October 1, 2026).