HEMLOCK HAVEN

New Hampshire — Community Water System — PWSID: NH1053020

System Information

PWSID	NH1053020
System Name	HEMLOCK HAVEN
System Type	Community Water System
Water Source	Ground Water
Activity Status	Active
Owner Type	Private
EPA Region	01
Serves School	No
Wholesaler	No
First Reported	Mar 8, 1979
Last Reported	Dec 15, 2025

Location & Contact

State	New Hampshire
City	PORTSMOUTH
ZIP Code	03801
Address	559 SAGAMORE AVE UT 13
Organization	—
Phone	—

Population & Service

Population Served	207
Service Connections	83

Drinking Water Violations (40)

This water system has 40 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
Oct 1, 2023	Nov 1, 2023	Revised Total Coliform Rule	MCL	Yes	No	—	—	—	Resolved	Nov 1, 2023	Revised Total Coliform Rule
Oct 1, 2023	Nov 1, 2023	Revised Total Coliform Rule	MCL	Yes	No	—	—	—	Resolved	Nov 1, 2023	Revised Total Coliform Rule
Oct 1, 2023	Nov 1, 2023	Revised Total Coliform Rule	MCL	Yes	No	—	—	—	Resolved	Nov 1, 2023	Revised Total Coliform Rule
Dec 30, 2021	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jan 19, 2022	Lead and Copper Rule
Dec 30, 2021	—	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Jan 19, 2022	Lead and Copper Rule
Oct 1, 2005	Dec 31, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2005	Total Coliform Rule
Oct 1, 2005	Dec 31, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2005	Total Coliform Rule
Oct 1, 2005	Dec 31, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2005	Total Coliform Rule
Oct 1, 2005	Dec 31, 2005	Coliform (TCR)	MR	No	No	—	5% of samples	—	Resolved	Dec 31, 2005	Total Coliform Rule
Jan 1, 1996	Sep 16, 1998	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 16, 1998	Lead and Copper Rule
Jan 1, 1996	Sep 16, 1998	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 16, 1998	Lead and Copper Rule
Jan 1, 1995	Dec 31, 1995	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Jan 1, 1995	Dec 31, 1995	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Jan 1, 1995	Dec 31, 1995	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Jan 1, 1995	Dec 31, 1995	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Jan 1, 1995	Dec 31, 1995	Nitrate	MR	No	Yes	—	10 mg/L	—	Resolved	Dec 31, 1995	Nitrate Rule
Jan 1, 1995	Feb 17, 1998	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 17, 1998	Lead and Copper Rule
Jan 1, 1995	Feb 17, 1998	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Feb 17, 1998	Lead and Copper Rule
Jan 1, 1994	Dec 31, 1994	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Dec 31, 1994	Nitrate Rule
Jan 1, 1994	Dec 31, 1994	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Dec 31, 1994	Nitrate Rule
Jan 1, 1994	Sep 18, 1997	Lead and Copper Rule	MR	No	No	—	TT	—	Resolved	Sep 18, 1997	Lead and Copper Rule
Jan 1, 1994	Dec 31, 1994	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Dec 31, 1994	Nitrate Rule
Jan 1, 1994	Dec 31, 1994	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Dec 31, 1994	Nitrate Rule
Jan 1, 1994	Dec 31, 1994	Nitrate	MR	No	No	—	10 mg/L	—	Resolved	Dec 31, 1994	Nitrate Rule
Aug 1, 1991	Aug 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1991	Total Coliform Rule
Aug 1, 1991	Aug 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1991	Total Coliform Rule
Aug 1, 1991	Aug 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1991	Total Coliform Rule
Aug 1, 1991	Aug 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Archived	Aug 31, 1991	Total Coliform Rule
Jul 1, 1991	Jul 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1991	Total Coliform Rule
Jul 1, 1991	Jul 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1991	Total Coliform Rule
Jul 1, 1991	Jul 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1991	Total Coliform Rule
Jul 1, 1991	Jul 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1991	Total Coliform Rule
Jul 1, 1991	Jul 31, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jul 31, 1991	Total Coliform Rule
Jun 1, 1991	Jun 30, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1991	Total Coliform Rule
Jun 1, 1991	Jun 30, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1991	Total Coliform Rule
Jun 1, 1991	Jun 30, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1991	Total Coliform Rule
Jun 1, 1991	Jun 30, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1991	Total Coliform Rule
Jun 1, 1991	Jun 30, 1991	Coliform (TCR)	MCL	Yes	No	—	5% of samples	—	Resolved	Jun 30, 1991	Total Coliform Rule
—	—		—	No	No	—	—	—	—	—	—
—	—		—	No	No	—	—	—	—	—	—

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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