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LOCKE LAKE

New Hampshire — Community Water System — PWSID: NH0142010

System Information

PWSIDNH0142010
System NameLOCKE LAKE
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypePrivate
EPA Region01
Serves SchoolNo
WholesalerNo
First ReportedMar 8, 1979
Last ReportedDec 15, 2025

Location & Contact

StateNew Hampshire
CityNASHUA
ZIP Code03064
AddressPO BOX 428
OrganizationPENNICHUCK WATER WORKS INC
Phone—

Population & Service

Population Served2,278
Service Connections911

Drinking Water Violations (245)

This water system has 245 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, 2018 Jun 30, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Jun 30, 2018 Arsenic Rule
Apr 1, 2018 Jun 30, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Jun 30, 2018 Arsenic Rule
Apr 1, 2018 Jun 30, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Jun 30, 2018 Arsenic Rule
Apr 1, 2018 Jun 30, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Jun 30, 2018 Arsenic Rule
Jan 1, 2018 Mar 31, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Mar 31, 2018 Arsenic Rule
Jan 1, 2018 Mar 31, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Mar 31, 2018 Arsenic Rule
Jan 1, 2018 Mar 31, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Mar 31, 2018 Arsenic Rule
Jan 1, 2018 Mar 31, 2018 Arsenic MCL Yes No .011 MG/L 0.010 mg/L — Resolved Mar 31, 2018 Arsenic Rule
Aug 8, 2012 — E. COLI MR No Yes — — — Resolved Oct 10, 2012 Ground Water Rule
Aug 8, 2012 — E. COLI MR No Yes — — — Resolved Oct 10, 2012 Ground Water Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Aug 1, 2012 Aug 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Aug 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Mar 1, 2012 Mar 31, 2012 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2012 Total Coliform Rule
Jul 1, 2010 Oct 1, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Oct 1, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2010 Oct 1, 2010 Chlorine MR No Yes — 4.0 mg/L — Resolved Oct 1, 2010 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2007 Sep 30, 2007 Arsenic MCL Yes No .021 MG/L 0.010 mg/L — Resolved Sep 30, 2007 Arsenic Rule
Jul 1, 2007 Sep 30, 2007 Arsenic MCL Yes No .021 MG/L 0.010 mg/L — Resolved Sep 30, 2007 Arsenic Rule
Jul 1, 2007 Sep 30, 2007 Arsenic MCL Yes No .021 MG/L 0.010 mg/L — Resolved Sep 30, 2007 Arsenic Rule
Jul 1, 2007 Sep 30, 2007 Arsenic MCL Yes No .021 MG/L 0.010 mg/L — Resolved Sep 30, 2007 Arsenic Rule
Apr 1, 2007 Jun 30, 2007 Arsenic MCL Yes No .015 MG/L 0.010 mg/L — Resolved Jun 30, 2007 Arsenic Rule
Apr 1, 2007 Jun 30, 2007 Arsenic MCL Yes No .015 MG/L 0.010 mg/L — Resolved Jun 30, 2007 Arsenic Rule
Apr 1, 2007 Jun 30, 2007 Arsenic MCL Yes No .015 MG/L 0.010 mg/L — Resolved Jun 30, 2007 Arsenic Rule
Apr 1, 2007 Jun 30, 2007 Arsenic MCL Yes No .015 MG/L 0.010 mg/L — Resolved Jun 30, 2007 Arsenic Rule
Jan 1, 2007 Mar 31, 2007 Arsenic MCL Yes No .016 MG/L 0.010 mg/L — Resolved Mar 31, 2007 Arsenic Rule
Jan 1, 2007 Mar 31, 2007 Arsenic MCL Yes No .016 MG/L 0.010 mg/L — Resolved Mar 31, 2007 Arsenic Rule
Jan 1, 2007 Mar 31, 2007 Arsenic MCL Yes No .016 MG/L 0.010 mg/L — Resolved Mar 31, 2007 Arsenic Rule
Jan 1, 2007 Mar 31, 2007 Arsenic MCL Yes No .016 MG/L 0.010 mg/L — Resolved Mar 31, 2007 Arsenic Rule
Feb 1, 2006 Feb 28, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2006 Total Coliform Rule
Feb 1, 2006 Feb 28, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2006 Total Coliform Rule
Feb 1, 2006 Feb 28, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2006 Total Coliform Rule
Feb 1, 2006 Feb 28, 2006 Coliform (TCR) MR No No — 5% of samples — Resolved Feb 28, 2006 Total Coliform Rule
Apr 1, 1996 Apr 30, 1996 Coliform (TCR) MR No No — 5% of samples — Archived Apr 30, 1996 Total Coliform Rule
Apr 1, 1996 Apr 30, 1996 Coliform (TCR) MR No No — 5% of samples — Archived Apr 30, 1996 Total Coliform Rule
Feb 1, 1995 Feb 28, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Feb 28, 1995 Total Coliform Rule
Feb 1, 1995 Feb 28, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Feb 28, 1995 Total Coliform Rule
Feb 1, 1995 Feb 28, 1995 Coliform (TCR) MR No No — 5% of samples — Archived Feb 28, 1995 Total Coliform Rule
Jan 1, 1995 Dec 31, 1995 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1995 Volatile Organic Chemicals
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 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 1995 Volatile Organic Chemicals
Jan 1, 1995 Dec 31, 1995 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 1995 Volatile Organic Chemicals
Jan 1, 1995 Dec 31, 1995 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 1995 Volatile Organic Chemicals
Jan 1, 1995 Dec 31, 1995 Nitrate MR No Yes — 10 mg/L — Resolved Dec 31, 1995 Nitrate 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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