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DOWNINGTOWN WATER AUTHORITY

Pennsylvania — Community Water System — PWSID: PA1150026

System Information

PWSIDPA1150026
System NameDOWNINGTOWN WATER AUTHORITY
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
CityDOWNINGTOWN
ZIP Code19335
Address100 WATER PLANT WAY
OrganizationDOWNINGTOWN WATER AUTHORITY
Phone610-269-5362

Population & Service

Population Served9,900
Service Connections3,681

Drinking Water Violations (245)

This water system has 245 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
Sep 1, 2025 Sep 30, 2025 Interim Enhanced Surface Water Treatment Rule MR No No — — — Archived Sep 30, 2025 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Sep 1, 2025 Sep 30, 2025 Interim Enhanced Surface Water Treatment Rule MR No No — — — Archived Sep 30, 2025 Interim and Long Term 1 Enhanced Surface Water Treatment Rule
Jul 1, 2025 Sep 30, 2025 TTHM MR No Yes — 0.080 mg/L — Archived Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jul 1, 2025 Sep 30, 2025 TTHM MR No Yes — 0.080 mg/L — Archived Sep 30, 2025 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2023 Dec 31, 2023 Styrene MR No No — 0.1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Ethylbenzene MR No No — 0.7 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Styrene MR No No — 0.1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Ethylbenzene MR No No — 0.7 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Benzene MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,2-Dichloroethane MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,2-Dichloropropane MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,2,4-Trichlorobenzene MR No No — 0.07 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 DICHLOROMETHANE MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 o-Dichlorobenzene MR No No — 0.6 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 o-Dichlorobenzene MR No No — 0.6 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Xylenes, Total MR No No — 10 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,2,4-Trichlorobenzene MR No No — 0.07 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Trichloroethylene MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,2-Dichloropropane MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 p-Dichlorobenzene MR No No — 0.075 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Tetrachloroethylene MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,1,2-Trichloroethane MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,1,2-Trichloroethane MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 p-Dichlorobenzene MR No No — 0.075 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,1,1-Trichloroethane MR No No — 0.2 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 CHLOROBENZENE MR No No — 0.1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 trans-1,2-Dichloroethylene MR No No — 0.1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,1-Dichloroethylene MR No No — 0.007 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 CHLOROBENZENE MR No No — 0.1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Toluene MR No No — 1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Carbon tetrachloride MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,2-Dichloroethane MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Tetrachloroethylene MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,1,1-Trichloroethane MR No No — 0.2 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Trichloroethylene MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Carbon tetrachloride MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Toluene MR No No — 1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 trans-1,2-Dichloroethylene MR No No — 0.1 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 1,1-Dichloroethylene MR No No — 0.007 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 DICHLOROMETHANE MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 cis-1,2-Dichloroethylene MR No No — 0.07 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Xylenes, Total MR No No — 10 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 Benzene MR No No — 0.005 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Jan 1, 2023 Dec 31, 2023 cis-1,2-Dichloroethylene MR No No — 0.07 mg/L — Resolved Dec 31, 2023 Volatile Organic Chemicals
Apr 1, 2022 Jun 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Apr 1, 2022 Jun 30, 2022 Total Haloacetic Acids (HAA5) MR No Yes — 0.060 mg/L — Resolved Jun 30, 2022 Stage 2 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Mar 31, 2018 CARBON, TOTAL MR No Yes — TT — Resolved Mar 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts Rule
Jan 1, 2018 Mar 31, 2018 CARBON, TOTAL MR No Yes — TT — Resolved Mar 31, 2018 Stage 1 Disinfectants and Disinfection Byproducts 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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