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WILLIAMSPORT MUN WATER AUTH

Pennsylvania — Community Water System — PWSID: PA4410173

System Information

PWSIDPA4410173
System NameWILLIAMSPORT MUN WATER AUTH
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region03
Serves SchoolNo
WholesalerNo
First ReportedFeb 12, 1979
Last ReportedDec 17, 2025

Location & Contact

StatePennsylvania
CityWILLIAMSPORT
ZIP Code17701
Address253 W 4TH ST
OrganizationWILLIAMSPORT MUN WATER AUTH
Phone570-323-6140

Population & Service

Population Served51,000
Service Connections18,558

Drinking Water Violations (68)

This water system has 68 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, 2018 Dec 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2018 Dec 31, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Dec 31, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 TTHM MR No Yes — 0.080 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2018 Sep 30, 2018 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Sep 30, 2018 Stage 2 Disinfectants and Disinfection Byproducts Rule
Oct 1, 2012 Dec 31, 2012 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 Ethylbenzene MR No Yes — 0.7 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 Xylenes, Total MR No Yes — 10 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 CHLOROBENZENE MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 Styrene MR No Yes — 0.1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 DICHLOROMETHANE MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 Toluene MR No Yes — 1 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 Benzene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 1,1,2-Trichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 Trichloroethylene MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Oct 1, 2012 Dec 31, 2012 1,1-Dichloroethylene MR No Yes — 0.007 mg/L — Resolved Dec 31, 2012 Volatile Organic Chemicals
Jul 1, 1985 Sep 30, 1985 TTHM MCL Yes No 7.74 0.080 mg/L .1 Archived Sep 30, 1985 Former Total Trihalomethane Rule
Jun 25, 1984 Jun 24, 1985 Selenium MR No Yes — 0.05 mg/L — Archived Jun 24, 1985 Inorganic Chemicals
Jun 25, 1984 Jun 24, 1985 Barium MR No Yes — 2 mg/L — Archived Jun 24, 1985 Inorganic Chemicals
Jun 25, 1984 Jun 24, 1985 Cadmium MR No Yes — 0.005 mg/L — Archived Jun 24, 1985 Inorganic Chemicals
Jun 25, 1984 Jun 24, 1985 Arsenic MR No Yes — 0.010 mg/L — Archived Jun 24, 1985 Arsenic Rule
Jun 25, 1984 Jun 24, 1985 Mercury MR No Yes — 0.002 mg/L — Archived Jun 24, 1985 Inorganic Chemicals
Jun 24, 1982 Jun 23, 1985 Endrin MR No Yes — 0.002 mg/L — Archived Jun 23, 1985 Synthetic Organic Chemicals
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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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