HAMILTON PUBLIC WATER SYSTEM

Ohio — Community Water System — PWSID: OH0904012

System Information

PWSID	OH0904012
System Name	HAMILTON PUBLIC WATER SYSTEM
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Local
EPA Region	05
Serves School	No
Wholesaler	No
First Reported	Jun 2, 2001
Last Reported	Nov 17, 2025

Location & Contact

State	Ohio
City	FAIRFIELD
ZIP Code	45014
Address	JAY MOSLEY
Organization	MOSLEY, JAY
Phone	—

Population & Service

Population Served	62,447
Service Connections	24,433

Drinking Water Violations (60)

This water system has 60 violations recorded in the EPA SDWIS database.

Begin Date	End Date	Contaminant	Category	Health-Based	Major	Measured	Federal MCL	State MCL	Status	Return to Compliance	Rule
Apr 1, 2025	Apr 30, 2025	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Archived	Apr 30, 2025	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2025	Apr 30, 2025	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Archived	Apr 30, 2025	Stage 1 Disinfectants and Disinfection Byproducts Rule
Dec 23, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jun 23, 2020	Consumer Confidence Rule
Dec 23, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jun 23, 2020	Consumer Confidence Rule
Jan 10, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 8, 2019	Consumer Confidence Rule
Jan 10, 2019	—	Consumer Confidence Rule	Other	No	No	—	—	—	Resolved	Jul 8, 2019	Consumer Confidence Rule
Jun 1, 2005	Aug 31, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Aug 31, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2005	Aug 31, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Aug 31, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2005	Aug 31, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Aug 31, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jun 1, 2005	Aug 31, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Aug 31, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005	Jun 30, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Jun 30, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005	Jun 30, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Jun 30, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005	Jun 30, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Jun 30, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2005	Jun 30, 2005	Chlorite	MR	No	Yes	—	1.0 mg/L	—	Resolved	Jun 30, 2005	Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2002	Jun 30, 2002	Gross Alpha, Excl. Radon and U	MR	No	Yes	—	15 pCi/L	—	Resolved	Apr 8, 2002	Radionuclides and Revised Rad Rule
Jan 1, 2002	Jun 30, 2002	Gross Alpha, Excl. Radon and U	MR	No	Yes	—	15 pCi/L	—	Resolved	Apr 8, 2002	Radionuclides and Revised Rad Rule
Jan 1, 2002	Jun 30, 2002	Gross Alpha, Excl. Radon and U	MR	No	Yes	—	15 pCi/L	—	Resolved	Apr 8, 2002	Radionuclides and Revised Rad Rule
Sep 1, 1997	Sep 30, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1997	Total Coliform Rule
Sep 1, 1997	Sep 30, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1997	Total Coliform Rule
Sep 1, 1997	Sep 30, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1997	Total Coliform Rule
Sep 1, 1997	Sep 30, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1997	Total Coliform Rule
Sep 1, 1997	Sep 30, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1997	Total Coliform Rule
Sep 1, 1997	Sep 30, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Sep 30, 1997	Total Coliform Rule
Mar 1, 1997	Mar 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 1997	Total Coliform Rule
Mar 1, 1997	Mar 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 1997	Total Coliform Rule
Mar 1, 1997	Mar 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 1997	Total Coliform Rule
Mar 1, 1997	Mar 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 1997	Total Coliform Rule
Mar 1, 1997	Mar 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 1997	Total Coliform Rule
Mar 1, 1997	Mar 31, 1997	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Mar 31, 1997	Total Coliform Rule
Oct 1, 1994	Oct 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 1994	Total Coliform Rule
Oct 1, 1994	Oct 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 1994	Total Coliform Rule
Oct 1, 1994	Oct 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 1994	Total Coliform Rule
Oct 1, 1994	Oct 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 1994	Total Coliform Rule
Oct 1, 1994	Oct 31, 1994	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Oct 31, 1994	Total Coliform Rule
Jul 1, 1993	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	May 25, 1995	Lead and Copper Rule
Jun 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Jun 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Jun 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Jun 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Jun 1, 1993	Jun 30, 1993	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1993	Total Coliform Rule
Jun 1, 1992	Jun 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1992	Total Coliform Rule
Jun 1, 1992	Jun 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1992	Total Coliform Rule
Jun 1, 1992	Jun 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1992	Total Coliform Rule
Jun 1, 1992	Jun 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1992	Total Coliform Rule
Jun 1, 1992	Jun 30, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule
May 1, 1992	May 31, 1992	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	May 31, 1992	Total Coliform Rule

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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