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TWIN HILLS WATER DISTRICT

Connecticut — Community Water System — PWSID: CT0320061

System Information

PWSIDCT0320061
System NameTWIN HILLS WATER DISTRICT
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

StateConnecticut
CityBOLTON
ZIP Code06043-9220
AddressPO Box 9220
OrganizationPERETTO, BRYAN
Phone860-337-6337

Population & Service

Population Served156
Service Connections39

Drinking Water Violations (58)

This water system has 58 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 12, 2023 — Revised Total Coliform Rule TT Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Apr 12, 2023 — Revised Total Coliform Rule TT Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Apr 12, 2023 — Revised Total Coliform Rule TT Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Apr 12, 2023 — Revised Total Coliform Rule TT Yes No — — — Resolved Jul 25, 2023 Revised Total Coliform Rule
Jul 9, 2022 — Revised Total Coliform Rule TT Yes No — — — Resolved Aug 1, 2022 Revised Total Coliform Rule
Jul 9, 2022 — Revised Total Coliform Rule TT Yes No — — — Resolved Aug 1, 2022 Revised Total Coliform Rule
Jul 9, 2022 — Revised Total Coliform Rule TT Yes No — — — Resolved Aug 1, 2022 Revised Total Coliform Rule
Jul 9, 2022 — Revised Total Coliform Rule TT Yes No — — — Resolved Aug 1, 2022 Revised Total Coliform Rule
Jun 15, 2022 — E. COLI MR No Yes — — — Resolved Mar 10, 2023 Ground Water Rule
Jun 15, 2022 — E. COLI MR No Yes — — — Resolved Mar 10, 2023 Ground Water Rule
Jun 15, 2022 — E. COLI MR No Yes — — — Resolved Mar 10, 2023 Ground Water Rule
Nov 5, 2021 — Revised Total Coliform Rule TT Yes No — — — Resolved Apr 20, 2022 Revised Total Coliform Rule
Nov 5, 2021 — Revised Total Coliform Rule TT Yes No — — — Resolved Apr 20, 2022 Revised Total Coliform Rule
Nov 5, 2021 — Revised Total Coliform Rule TT Yes No — — — Resolved Apr 20, 2022 Revised Total Coliform Rule
Nov 5, 2021 — Revised Total Coliform Rule TT Yes No — — — Resolved Apr 20, 2022 Revised Total Coliform Rule
Aug 10, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jul 5, 2022 Consumer Confidence Rule
Aug 10, 2021 — Consumer Confidence Rule Other No No — — — Resolved Jul 5, 2022 Consumer Confidence Rule
Aug 10, 2018 — Consumer Confidence Rule Other No No — — — Resolved May 23, 2019 Consumer Confidence Rule
Aug 10, 2018 — Consumer Confidence Rule Other No No — — — Resolved May 23, 2019 Consumer Confidence Rule
Jul 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved May 23, 2019 Consumer Confidence Rule
Jul 1, 2018 — Consumer Confidence Rule Other No No — — — Resolved May 23, 2019 Consumer Confidence Rule
Aug 10, 2017 — Consumer Confidence Rule Other No No — — — Resolved Dec 14, 2021 Consumer Confidence Rule
Aug 10, 2017 — Consumer Confidence Rule Other No No — — — Resolved Dec 14, 2021 Consumer Confidence Rule
Jul 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Dec 14, 2021 Consumer Confidence Rule
Jul 1, 2017 — Consumer Confidence Rule Other No No — — — Resolved Dec 14, 2021 Consumer Confidence Rule
Aug 10, 2016 — Consumer Confidence Rule Other No No — — — Resolved Aug 10, 2016 Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Jul 3, 2013 Consumer Confidence Rule
Jul 1, 2013 — Consumer Confidence Rule Other No No — — — Resolved Jul 3, 2013 Consumer Confidence Rule
Jul 1, 2010 — Consumer Confidence Rule Other No No — — — Resolved Jul 7, 2010 Consumer Confidence Rule
Jul 1, 2010 — Consumer Confidence Rule Other No No — — — Resolved Jul 7, 2010 Consumer Confidence Rule
Oct 1, 2009 Oct 31, 2009 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 2009 Total Coliform Rule
Oct 1, 2009 Oct 31, 2009 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 2009 Total Coliform Rule
Oct 1, 2009 Oct 31, 2009 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 2009 Total Coliform Rule
Oct 1, 2009 Oct 31, 2009 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Oct 31, 2009 Total Coliform Rule
Jul 1, 2007 — Consumer Confidence Rule Other No No — — — Resolved Jul 24, 2007 Consumer Confidence Rule
Jul 1, 2007 — Consumer Confidence Rule Other No No — — — Resolved Jul 24, 2007 Consumer Confidence Rule
Jul 1, 2006 — Consumer Confidence Rule Other No No — — — Resolved Jul 24, 2006 Consumer Confidence Rule
Jul 1, 2006 — Consumer Confidence Rule Other No No — — — Resolved Jul 24, 2006 Consumer Confidence Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
May 1, 2003 May 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved May 31, 2003 Total Coliform Rule
Jan 1, 2003 Mar 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2003 Total Coliform Rule
Jan 1, 2003 Mar 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2003 Total Coliform Rule
Jan 1, 2003 Mar 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2003 Total Coliform Rule
Jan 1, 2003 Mar 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2003 Total Coliform Rule
Jan 1, 2003 Mar 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2003 Total Coliform Rule
Jan 1, 2003 Mar 31, 2003 Coliform (TCR) MCL Yes No — 5% of samples — Resolved Mar 31, 2003 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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