BOWLING GREEN, OH · Hancock County

NORTHWESTERN W AND SD - MCCOMB Water System

Current status

1 item on record is open and awaiting resolution as of July 4, 2026. None are health-based violations — open items of this kind are most often monitoring or reporting requirements, not water-safety findings. Full details are in the violation history below.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Ohio’s official records. Always confirm current status with Ohio before making decisions based on this information.

System facts

System ID (PWSID): OH3200411
System type: Community Water System
Population served: 1,527
Service connections: 626
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
December 1, 2025
Unaddressed
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 31, 2024 – June 20, 2025
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2024 – March 31, 2024
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2023 – December 31, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2023 – September 30, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
April 1, 2023 – June 30, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
January 1, 2023 – March 31, 2023
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
October 1, 2022 – December 31, 2022
Resolved
Maximum Contaminant Level Violation, Average
Health-based
Total Haloacetic Acids (HAA5)
July 1, 2022 – September 30, 2022
Resolved
Monitoring of Treatment (SWTR-Unfilt/GWR)
—
Surface Water Treatment Rule
January 1, 2019 – January 31, 2019
Resolved
Monthly Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
August 1, 2015 – August 31, 2015
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2014 – March 31, 2014
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
October 1, 2013 – December 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2013 – December 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
October 1, 2013 – December 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
Total Haloacetic Acids (HAA5)
January 1, 2013 – March 31, 2013
Resolved
Monitoring and Reporting (DBP)
—
TTHM
January 1, 2013 – March 31, 2013
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2012 – December 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2012 – September 30, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2012 – June 30, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
January 1, 2012 – March 31, 2012
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
October 1, 2011 – December 31, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2011 – September 30, 2011
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
July 1, 2006 – September 30, 2006
Resolved
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2006 – June 30, 2006
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2005 – June 28, 2007
Resolved
Consumer Confidence Report Inadequate Reporting
—
Consumer Confidence Rule
July 1, 2004 – June 28, 2007
Resolved
Treatment Technique (SWTR and GWR)
Health-based
Surface Water Treatment Rule
July 1, 2002 – July 31, 2002
Resolved
Monitoring, Regular
—
LASSO
November 1, 2000 – January 31, 2001
Resolved
Monitoring, Regular
—
Simazine
November 1, 2000 – January 31, 2001
Resolved
Monitoring, Regular
—
Atrazine
November 1, 2000 – January 31, 2001
Resolved
Monitoring, Regular
—
Simazine
August 1, 2000 – October 31, 2000
Resolved
Monitoring, Regular
—
Atrazine
August 1, 2000 – October 31, 2000
Resolved
Monitoring, Regular
—
Fluoride
January 1, 1997 – June 30, 1997
Resolved
Monitoring, Regular
—
Arsenic
January 1, 1997 – June 30, 1997
Resolved
Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
December 1, 1996 – December 31, 1996
Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
December 1, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Unaddressed
July 31, 2024 – June 20, 2025	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
January 1, 2024 – March 31, 2024	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2023 – December 31, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2023 – September 30, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
April 1, 2023 – June 30, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2023 – March 31, 2023	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
October 1, 2022 – December 31, 2022	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
July 1, 2022 – September 30, 2022	Maximum Contaminant Level Violation, Average	Total Haloacetic Acids (HAA5)	Health-based	Resolved
January 1, 2019 – January 31, 2019	Monitoring of Treatment (SWTR-Unfilt/GWR)	Surface Water Treatment Rule	—	Resolved
August 1, 2015 – August 31, 2015	Monthly Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
January 1, 2014 – March 31, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2013 – December 31, 2013	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
October 1, 2013 – December 31, 2013	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2013 – December 31, 2013	Monitoring and Reporting (DBP)	TTHM	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring and Reporting (DBP)	Total Haloacetic Acids (HAA5)	—	Resolved
January 1, 2013 – March 31, 2013	Monitoring and Reporting (DBP)	TTHM	—	Resolved
October 1, 2012 – December 31, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2012 – September 30, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2012 – June 30, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
January 1, 2012 – March 31, 2012	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
October 1, 2011 – December 31, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2011 – September 30, 2011	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2006 – September 30, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
April 1, 2006 – June 30, 2006	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
July 1, 2005 – June 28, 2007	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2004 – June 28, 2007	Consumer Confidence Report Inadequate Reporting	Consumer Confidence Rule	—	Resolved
July 1, 2002 – July 31, 2002	Treatment Technique (SWTR and GWR)	Surface Water Treatment Rule	Health-based	Resolved
November 1, 2000 – January 31, 2001	Monitoring, Regular	LASSO	—	Resolved
November 1, 2000 – January 31, 2001	Monitoring, Regular	Simazine	—	Resolved
November 1, 2000 – January 31, 2001	Monitoring, Regular	Atrazine	—	Resolved
August 1, 2000 – October 31, 2000	Monitoring, Regular	Simazine	—	Resolved
August 1, 2000 – October 31, 2000	Monitoring, Regular	Atrazine	—	Resolved
January 1, 1997 – June 30, 1997	Monitoring, Regular	Fluoride	—	Resolved
January 1, 1997 – June 30, 1997	Monitoring, Regular	Arsenic	—	Resolved
December 1, 1996 – December 31, 1996	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved

Unaddressed no corrective action on record yetResolved addressed and confirmed by the state

Enforcement actions

June 20, 2025State Compliance achieved21 linked violations
July 31, 2024State Violation/Reminder Notice1 linked violation
May 13, 2024State Compliance achieved8 linked violations
March 12, 2024State Public Notification requested3 linked violations
January 2, 2024State Public Notification received2 linked violations
December 11, 2023State Public Notification requested1 linked violation
September 28, 2023State Public Notification received1 linked violation
September 7, 2023State Public Notification requested1 linked violation
September 7, 2023State Violation/Reminder Notice1 linked violation
June 30, 2023State Public Notification received1 linked violation
June 27, 2023State Bilateral Compliance Agreement signed7 linked violations
June 5, 2023State Violation/Reminder Notice1 linked violation
June 5, 2023State Public Notification requested1 linked violation
March 24, 2023State Public Notification received1 linked violation
March 13, 2023State Public Notification requested1 linked violation
March 13, 2023State Violation/Reminder Notice1 linked violation
December 28, 2022State Public Notification received1 linked violation
December 12, 2022State Violation/Reminder Notice1 linked violation
December 12, 2022State Public Notification requested1 linked violation
October 25, 2022State Public Notification received1 linked violation
October 11, 2022State Violation/Reminder Notice1 linked violation
October 11, 2022State Public Notification requested1 linked violation
October 28, 2019State Public Notification received1 linked violation
February 28, 2019State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 28, 2019State Compliance achieved1 linked violation
February 26, 2019State Violation/Reminder Notice1 linked violation
February 26, 2019State Public Notification requested1 linked violation
February 26, 2019State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
January 13, 2016State Administrative/Compliance Order without penalty issued1 linked violation
January 13, 2016State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
September 30, 2015State Compliance achieved1 linked violation
September 28, 2015State Public Notification received1 linked violation
September 21, 2015State Public Notification requested1 linked violation
June 23, 2014State Public Notification received6 linked violations
June 9, 2014State Bilateral Compliance Agreement signed12 linked violations
May 14, 2014State Compliance achieved8 linked violations
March 18, 2014State Public Notification requested1 linked violation
March 18, 2014State Violation/Reminder Notice1 linked violation
February 24, 2014State Violation/Reminder Notice1 linked violation
February 24, 2014State Public Notification requested1 linked violation
February 20, 2014State Public Notification requested2 linked violations
February 20, 2014State Violation/Reminder Notice2 linked violations
February 14, 2014State Compliance achieved2 linked violations
July 2, 2013State Public Notification received2 linked violations
May 21, 2013State Public Notification requested2 linked violations
May 21, 2013State Violation/Reminder Notice2 linked violations
May 15, 2013State Compliance achieved2 linked violations
April 1, 2013State Public Notification received1 linked violation
February 20, 2013State Violation/Reminder Notice1 linked violation
February 20, 2013State Public Notification requested1 linked violation
January 2, 2013State Public Notification received1 linked violation
November 20, 2012State Public Notification requested1 linked violation
November 20, 2012State Violation/Reminder Notice1 linked violation
October 1, 2012State Public Notification received1 linked violation
September 6, 2012State Public Notification requested2 linked violations
July 6, 2012State Public Notification received2 linked violations
June 8, 2012State Violation/Reminder Notice2 linked violations
March 2, 2012State Public Notification requested4 linked violations
December 19, 2011State Public Notification received4 linked violations
April 19, 2007State Compliance achieved2 linked violations
September 20, 2002State Violation/Reminder Notice26 linked violations
March 20, 2001State Compliance achieved33 linked violations
March 16, 2001State Violation/Reminder Notice32 linked violations

Contact

GREINER, JERRY R

419-354-9090

BOWLING GREEN, OH 43402-0348