Is LOUISVILLE WATER COMPANY required to publish a Consumer Confidence Report?

Yes. LOUISVILLE WATER COMPANY is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.

When is LOUISVILLE WATER COMPANY’s next Consumer Confidence Report due?

LOUISVILLE WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.

What is a Consumer Confidence Report?

A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

LOUISVILLE, KY · Jefferson County

LOUISVILLE WATER COMPANY Water System

Consumer Confidence Report status

LOUISVILLE WATER COMPANY must publish a Consumer Confidence Report — the annual drinking water quality report covering calendar year 2026 — by July 1, 2027.

As of August 1, 2026, EPA's federal records show no open violations for LOUISVILLE WATER COMPANY.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed August 1, 2026. This is a record-keeping and public-information tool — it does not replace Kentucky’s official records. Always confirm current status with Kentucky before making decisions based on this information.

System facts

System ID (PWSID): KY0560258
System type: Community Water System
Population served: 806,997
Service connections: 311,310
Ownership: privately owned
Water source: surface water (rivers, lakes, or reservoirs)

LOUISVILLE WATER COMPANY is the largest community water system in Kentucky, serving 806,997 people from surface water.

As of August 1, 2026, its federal record holds 75 entries between 1993 and 2006, all of which EPA lists as closed. Nothing has been added since 2006.

Of the 75, 68 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves volatile organic chemicals, inorganic chemicals, and synthetic organic chemicals.

Violation history

Monitoring and Reporting (DBP)
—
CARBON, TOTAL
October 1, 2006 – December 31, 2006
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
June 1, 2004 – June 30, 2004
Resolved
Consumer Confidence Report Complete Failure to Report
—
Consumer Confidence Rule
July 1, 2001 – July 19, 2001
Resolved
Monitoring, Regular
—
Cadmium
January 1, 1999 – March 31, 1999
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1999 – March 31, 1999
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1999 – March 31, 1999
Resolved
Monitoring, Regular
—
Cadmium
July 1, 1998 – September 30, 1998
Resolved
Monitoring, Regular
—
Thallium, Total
July 1, 1998 – September 30, 1998
Resolved
Monitoring, Regular
—
Beryllium, Total
July 1, 1998 – September 30, 1998
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Cadmium
June 22, 1998 – July 21, 1998
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Beryllium, Total
June 22, 1998 – July 21, 1998
Resolved
Monitoring, Regular
—
Nitrate
January 1, 1998 – December 31, 1998
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1998 – March 31, 1998
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
November 1, 1997 – November 30, 1997
Resolved
Monitoring, Regular
—
Thallium, Total
July 1, 1997 – September 30, 1997
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1997 – June 30, 1998
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 1997 – May 31, 1997
Resolved
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
May 1, 1997 – May 31, 1997
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Thallium, Total
April 3, 1997 – May 2, 1997
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 1996 – June 30, 1996
Resolved
Monitoring, Regular
—
1,1,2-Trichloroethane
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
cis-1,2-Dichloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
DICHLOROMETHANE
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
o-Dichlorobenzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
trans-1,2-Dichloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,2-Dichloropropane
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Selenium
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Tetrachloroethylene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
CHLOROBENZENE
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Benzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Toluene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Ethylbenzene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Styrene
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Arsenic
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Barium
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Chromium
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Mercury
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Antimony, Total
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Beryllium, Total
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Thallium, Total
January 1, 1996 – December 31, 1996
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Picloram
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 1996 – December 31, 1998
Resolved
Monitoring, Regular
—
1,2,4-Trichlorobenzene
January 1, 1996 – December 31, 1998
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
June 1, 1994 – June 30, 1994
Resolved
Monitoring, Regular
—
Carbon tetrachloride
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Trichloroethylene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Benzene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,2-Dichloroethane
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
1,1-Dichloroethylene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Vinyl chloride
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
p-Dichlorobenzene
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Pentachlorophenol
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
1,1,1-Trichloroethane
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
Carbofuran
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Aldicarb sulfone
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Dalapon
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Picloram
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Aldicarb sulfoxide
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Mercury
January 1, 1993 – December 31, 1993
Resolved
Monitoring, Regular
—
OXAMYL
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Dinoseb
January 1, 1993 – December 31, 1995
Resolved
Monitoring, Regular
—
Aldicarb
January 1, 1993 – December 31, 1995
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
October 1, 2006 – December 31, 2006	Monitoring and Reporting (DBP)	CARBON, TOTAL	—	Resolved
June 1, 2004 – June 30, 2004	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 2001 – July 19, 2001	Consumer Confidence Report Complete Failure to Report	Consumer Confidence Rule	—	Resolved
January 1, 1999 – March 31, 1999	Monitoring, Regular	Cadmium	—	Resolved
January 1, 1999 – March 31, 1999	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1999 – March 31, 1999	Monitoring, Regular	Thallium, Total	—	Resolved
July 1, 1998 – September 30, 1998	Monitoring, Regular	Cadmium	—	Resolved
July 1, 1998 – September 30, 1998	Monitoring, Regular	Thallium, Total	—	Resolved
July 1, 1998 – September 30, 1998	Monitoring, Regular	Beryllium, Total	—	Resolved
June 22, 1998 – July 21, 1998	Maximum Contaminant Level Violation, Average	Cadmium	Health-based	Resolved
June 22, 1998 – July 21, 1998	Maximum Contaminant Level Violation, Average	Beryllium, Total	Health-based	Resolved
January 1, 1998 – December 31, 1998	Monitoring, Regular	Nitrate	—	Resolved
January 1, 1998 – March 31, 1998	Monitoring, Regular	Thallium, Total	—	Resolved
November 1, 1997 – November 30, 1997	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
July 1, 1997 – September 30, 1997	Monitoring, Regular	Thallium, Total	—	Resolved
July 1, 1997 – June 30, 1998	Monitoring, Regular	Nitrate	—	Resolved
May 1, 1997 – May 31, 1997	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
May 1, 1997 – May 31, 1997	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Resolved
April 3, 1997 – May 2, 1997	Maximum Contaminant Level Violation, Single Sample	Thallium, Total	Health-based	Resolved
June 1, 1996 – June 30, 1996	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,1,2-Trichloroethane	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	cis-1,2-Dichloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	DICHLOROMETHANE	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	o-Dichlorobenzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	trans-1,2-Dichloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2-Dichloropropane	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Selenium	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Tetrachloroethylene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	CHLOROBENZENE	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Benzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Toluene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Ethylbenzene	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Styrene	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Arsenic	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Barium	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Chromium	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Mercury	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Antimony, Total	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Beryllium, Total	—	Resolved
January 1, 1996 – December 31, 1996	Monitoring, Regular	Thallium, Total	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Picloram	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	Aldicarb	—	Resolved
January 1, 1996 – December 31, 1998	Monitoring, Regular	1,2,4-Trichlorobenzene	—	Resolved
June 1, 1994 – June 30, 1994	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Carbon tetrachloride	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Trichloroethylene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Benzene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,2-Dichloroethane	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,1-Dichloroethylene	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Vinyl chloride	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	p-Dichlorobenzene	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Pentachlorophenol	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	1,1,1-Trichloroethane	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Carbofuran	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Aldicarb sulfone	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Dalapon	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Picloram	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Aldicarb sulfoxide	—	Resolved
January 1, 1993 – December 31, 1993	Monitoring, Regular	Mercury	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	OXAMYL	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Dinoseb	—	Resolved
January 1, 1993 – December 31, 1995	Monitoring, Regular	Aldicarb	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

February 4, 2008State Public Notification received3 linked violations
February 8, 2007State Public Notification requested3 linked violations
February 1, 2007State Compliance achieved8 linked violations
February 15, 2000State Compliance achieved7 linked violations
February 15, 2000State Compliance achieved7 linked violations
September 1, 1999State Public Notification requested17 linked violations
September 1, 1999State Violation/Reminder Notice15 linked violations
April 29, 1999State Compliance achieved5 linked violations
April 29, 1999State Compliance achieved26 linked violations
April 16, 1999State Public Notification received27 linked violations
April 16, 1999State Public Notification received9 linked violations
April 16, 1999State Public Notification received10 linked violations
April 16, 1999State Public Notification received6 linked violations
April 16, 1999State Public Notification received13 linked violations
April 16, 1999State Public Notification received9 linked violations
April 16, 1999State Public Notification received5 linked violations
April 16, 1999State Public Notification received4 linked violations
March 16, 1999State Compliance achieved6 linked violations
March 16, 1999State Compliance achieved4 linked violations
March 16, 1999State Compliance achieved18 linked violations
March 16, 1999State Compliance achieved4 linked violations
March 16, 1999State Compliance achieved9 linked violations
March 12, 1999State Compliance achieved6 linked violations
March 3, 1999State Public Notification requested4 linked violations
March 3, 1999State Violation/Reminder Notice12 linked violations
March 3, 1999State Public Notification requested4 linked violations
March 3, 1999State Public Notification requested6 linked violations
March 3, 1999State Public Notification requested4 linked violations
March 3, 1999State Public Notification requested5 linked violations
March 3, 1999State Violation/Reminder Notice25 linked violations
March 3, 1999State Violation/Reminder Notice8 linked violations
March 3, 1999State Violation/Reminder Notice6 linked violations
March 3, 1999State Public Notification requested10 linked violations
March 3, 1999State Violation/Reminder Notice5 linked violations
March 3, 1999State Public Notification requested3 linked violations
March 3, 1999State Violation/Reminder Notice5 linked violations
March 3, 1999State Violation/Reminder Notice5 linked violations
March 3, 1999State Public Notification requested6 linked violations
March 3, 1999State Public Notification requested4 linked violations
March 3, 1999State Public Notification requested7 linked violations
March 3, 1999State Public Notification requested4 linked violations
March 3, 1999State Violation/Reminder Notice4 linked violations
March 3, 1999State Public Notification requested6 linked violations
March 3, 1999State Public Notification requested9 linked violations
March 3, 1999State Public Notification requested4 linked violations
March 3, 1999State Public Notification requested9 linked violations
March 3, 1999State Public Notification requested5 linked violations
March 3, 1999State Violation/Reminder Notice58 linked violations
March 3, 1999State Violation/Reminder Notice4 linked violations
November 24, 1998State Public Notification requested200 linked violations
November 24, 1998State Violation/Reminder Notice26 linked violations
November 24, 1998State Public Notification requested47 linked violations
December 17, 1997State Compliance achieved14 linked violations
December 17, 1997State Compliance achieved34 linked violations
December 17, 1997State Compliance achieved85 linked violations
April 7, 1997State Compliance achieved12 linked violations

Common questions

Is LOUISVILLE WATER COMPANY required to publish a Consumer Confidence Report?: Yes. LOUISVILLE WATER COMPANY is a community water system, and federal rules (40 CFR 141 Subpart O) require every community water system to publish a Consumer Confidence Report each year.
When is LOUISVILLE WATER COMPANY’s next Consumer Confidence Report due?: LOUISVILLE WATER COMPANY’s next Consumer Confidence Report is due by July 1, 2027. The report covers calendar year 2026.
Does LOUISVILLE WATER COMPANY have any open drinking water violations on record?: As of August 1, 2026, EPA's federal records show no open violations for LOUISVILLE WATER COMPANY.
What is a Consumer Confidence Report?: A Consumer Confidence Report (CCR) is the annual drinking water quality report that community water systems must provide to the people they serve. It lists the contaminants detected in the system’s water during the year, where the water comes from, and how the results compare with federal limits. EPA’s revised CCR rule takes effect January 1, 2027, and the first reports in the new format are due July 1, 2027.

Contact

BRUCE, SPENCER

502-271-8873

LOUISVILLE, KY 40202