COGSWELL SPRINGS WATER WORKS

New Hampshire — Community Water System — PWSID: NH1121010

System Information

PWSIDNH1121010
System NameCOGSWELL SPRINGS WATER WORKS
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region01
Serves SchoolNo
WholesalerNo
First ReportedMar 8, 1979
Last ReportedDec 15, 2025

Location & Contact

StateNew Hampshire
CityHENNIKER
ZIP Code03242
Address18 DEPOT HILL RD
OrganizationCOGSWELL SPRINGS WATER WORKS
Phone

Population & Service

Population Served3,000
Service Connections581

Drinking Water Violations (22)

This water system has 22 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
Dec 30, 2019 Lead and Copper Rule MR No No TT Resolved Jan 27, 2020 Lead and Copper Rule
Dec 30, 2019 Lead and Copper Rule MR No No TT Resolved Jan 27, 2020 Lead and Copper Rule
Jun 8, 2017 E. COLI MR No Yes Resolved Jun 22, 2017 Ground Water Rule
Jun 8, 2017 E. COLI MR No Yes Resolved Jun 22, 2017 Ground Water Rule
Oct 1, 2010 Oct 31, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 2010 Total Coliform Rule
Oct 1, 2010 Oct 31, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 2010 Total Coliform Rule
Oct 1, 2010 Oct 31, 2010 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 2010 Total Coliform Rule
Aug 1, 2010 Aug 31, 2010 Coliform (TCR) MR No No 5% of samples Resolved Aug 31, 2010 Total Coliform Rule
Aug 1, 2010 Aug 31, 2010 Coliform (TCR) MR No No 5% of samples Resolved Aug 31, 2010 Total Coliform Rule
Apr 1, 2010 Apr 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Apr 30, 2010 Total Coliform Rule
Apr 1, 2010 Apr 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Apr 30, 2010 Total Coliform Rule
Apr 1, 2010 Apr 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Apr 30, 2010 Total Coliform Rule
Apr 1, 2010 Apr 30, 2010 Coliform (TCR) MR No No 5% of samples Resolved Apr 30, 2010 Total Coliform Rule
Sep 1, 2008 Sep 30, 2008 Coliform (TCR) MCL Yes No 5% of samples Resolved Sep 30, 2008 Total Coliform Rule
Sep 1, 2008 Sep 30, 2008 Coliform (TCR) MCL Yes No 5% of samples Resolved Sep 30, 2008 Total Coliform Rule
Sep 1, 2008 Sep 30, 2008 Coliform (TCR) MCL Yes No 5% of samples Resolved Sep 30, 2008 Total Coliform Rule
Sep 1, 2008 Sep 30, 2008 Coliform (TCR) MCL Yes No 5% of samples Resolved Sep 30, 2008 Total Coliform Rule
Oct 1, 2004 Oct 31, 2004 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 2004 Total Coliform Rule
Oct 1, 2004 Oct 31, 2004 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 2004 Total Coliform Rule
Oct 1, 2004 Oct 31, 2004 Coliform (TCR) MCL Yes No 5% of samples Resolved Oct 31, 2004 Total Coliform Rule
Aug 1, 1994 Aug 31, 1994 Coliform (TCR) MCL Yes No 5% of samples Archived Aug 31, 1994 Total Coliform Rule
Mar 1, 1991 Mar 31, 1991 Coliform (TCR) MCL Yes No 5% of samples Resolved Mar 31, 1991 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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