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MIDDLESEX TWP MUNI AUTH

Pennsylvania — Community Water System — PWSID: PA7210063

System Information

PWSIDPA7210063
System NameMIDDLESEX TWP MUNI AUTH
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region03
Serves SchoolNo
WholesalerNo
First ReportedJan 10, 1986
Last ReportedDec 17, 2025

Location & Contact

StatePennsylvania
CityCARLISLE
ZIP Code17013
Address350 N MIDDLESEX RD
OrganizationMIDDLESEX TWP MUNI AUTH
Phone717-243-0674

Population & Service

Population Served3,527
Service Connections1,126

Drinking Water Violations (235)

This water system has 235 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
Jul 1, 2024 Sep 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2024 Sep 30, 2024 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2024 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2023 Sep 30, 2023 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2023 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Endothall MR No No — 0.1 mg/L — Resolved Nov 13, 2023 Synthetic Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Endothall MR No No — 0.1 mg/L — Resolved Nov 13, 2023 Synthetic Organic Chemicals
Jul 1, 2022 Sep 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2022 Sep 30, 2022 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2019 Sep 30, 2019 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2019 Nitrate Rule
Jul 1, 2019 Sep 30, 2019 Nitrite MR No Yes — 1 mg/L — Resolved Sep 30, 2019 Nitrate Rule
Jul 1, 2019 Sep 30, 2019 Nitrite MR No Yes — 1 mg/L — Resolved Sep 30, 2019 Nitrate Rule
Jul 1, 2019 Sep 30, 2019 Nitrate MR No Yes — 10 mg/L — Resolved Sep 30, 2019 Nitrate Rule
Feb 1, 2018 Feb 28, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Feb 28, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2018 Feb 28, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Feb 28, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2018 Feb 28, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Feb 28, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2018 Feb 28, 2018 Chlorine MR No Yes — 4.0 mg/L — Resolved Feb 28, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Feb 1, 2017 Feb 28, 2017 Groundwater Rule MR No Yes — — — Resolved Feb 28, 2017 Ground Water Rule
Feb 1, 2017 Feb 28, 2017 Groundwater Rule MR No Yes — — — Resolved Feb 28, 2017 Ground Water Rule
Jan 1, 2017 Dec 31, 2017 Toxaphene MR No No — 0.003 mg/L — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Atrazine MR No No — 0.003 mg/L — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 LASSO MR No No — — — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 LASSO MR No No — — — Resolved Dec 31, 2017 Synthetic Organic Chemicals
Jan 1, 2017 Dec 31, 2017 LASSO MR No No — — — Resolved Dec 31, 2017 Synthetic Organic Chemicals

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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