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HIDDEN VALLEY/MASON

New Hampshire — Community Water System — PWSID: NH2372020

System Information

PWSIDNH2372020
System NameHIDDEN VALLEY/MASON
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region01
Serves SchoolNo
WholesalerNo
First ReportedMar 2, 1989
Last ReportedFeb 19, 2026

Location & Contact

StateNew Hampshire
CityMOULTONBOROUGH
ZIP Code03254
AddressPO BOX 389
OrganizationLAKES REGION WATER CO.
Phone—

Population & Service

Population Served298
Service Connections119

Drinking Water Violations (121)

This water system has 121 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, 2024 — MR No No — TT — Resolved Oct 10, 2024 —
Oct 1, 2024 — MR No No — TT — Resolved Oct 10, 2024 —
Dec 1, 2016 — TT Yes No — — — Resolved Jan 19, 2017 —
Dec 1, 2016 — TT Yes No — — — Resolved Jan 19, 2017 —
Dec 1, 2016 — TT Yes No — — — Resolved Jan 19, 2017 —
Dec 1, 2016 — TT Yes No — — — Resolved Jan 19, 2017 —
Dec 1, 2016 — RPT No No — — — Resolved Jan 19, 2017 —
Dec 1, 2016 — RPT No No — — — Resolved Jan 19, 2017 —
Dec 1, 2016 — RPT No No — — — Resolved Jan 19, 2017 —
Dec 1, 2016 — RPT No No — — — Resolved Jan 19, 2017 —
Sep 1, 2011 Sep 30, 2011 MCL Yes No — 5% of samples — Resolved Sep 30, 2011 —
Sep 1, 2011 Sep 30, 2011 MCL Yes No — 5% of samples — Resolved Sep 30, 2011 —
Sep 1, 2011 Sep 30, 2011 MCL Yes No — 5% of samples — Resolved Sep 30, 2011 —
Sep 1, 2011 Sep 30, 2011 MCL Yes No — 5% of samples — Resolved Sep 30, 2011 —
Dec 1, 2010 Dec 31, 2010 MCL Yes No — 5% of samples — Resolved Dec 31, 2010 —
Dec 1, 2010 Dec 31, 2010 MCL Yes No — 5% of samples — Resolved Dec 31, 2010 —
Dec 1, 2010 Dec 31, 2010 MCL Yes No — 5% of samples — Resolved Dec 31, 2010 —
Dec 1, 2010 Dec 31, 2010 MCL Yes No — 5% of samples — Resolved Dec 31, 2010 —
Jan 1, 1996 Dec 31, 1996 MR No Yes — 1 mg/L — Resolved Dec 31, 1996 —
Jan 1, 1996 Dec 31, 1996 MR No Yes — 1 mg/L — Resolved Dec 31, 1996 —
Jan 1, 1996 Dec 31, 1996 MR No Yes — 1 mg/L — Resolved Dec 31, 1996 —
Jan 1, 1996 Dec 31, 1996 MR No Yes — 1 mg/L — Resolved Dec 31, 1996 —
Jan 1, 1996 Dec 31, 1996 MR No Yes — 1 mg/L — Resolved Dec 31, 1996 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.2 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — — — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.001 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.00005 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.002 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.1 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.1 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.5 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.5 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.007 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.007 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.0004 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.0004 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.075 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.6 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.6 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.05 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.05 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.0002 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.005 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.005 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.4 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.4 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.2 mg/L — Resolved Dec 31, 1994 —
Jan 1, 1994 Dec 31, 1994 MR No Yes — 0.001 mg/L — Resolved Dec 31, 1994 —

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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