Drinking Water Compliance OS

CONCORDVILLE, PA · Delaware County

WEST MATTSON CO. INC. Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of March 24, 1994. It is no longer an operating public water system under this PWSID, and no compliance deadlines — including the 2027 Consumer Confidence Report rule — apply to it.

If you are a resident looking for your current water provider, see water systems in Delaware County, PA.

Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace Pennsylvania’s official records. Always confirm current status with Pennsylvania before making decisions based on this information.

System facts

System ID (PWSID)
PA1230013
System type
Community Water System
Population served
200
Service connections
57
Ownership
privately owned
Water source
groundwater (wells)

Violation history

  • Maximum Contaminant Level Violation, Average

    Health-based

    1,1,1-Trichloroethane

    April 1, 1994 – March 24, 1994

    Resolved
  • Maximum Contaminant Level Violation, Average

    Health-based

    1,1,1-Trichloroethane

    January 1, 1994 – March 24, 1994

    Resolved
  • Maximum Contaminant Level Violation, Monthly (TCR)

    Health-based

    Coliform (TCR)

    September 1, 1993 – September 30, 1993

    Resolved
  • Maximum Contaminant Level Violation, Acute (TCR)

    Health-based

    Coliform (TCR)

    September 1, 1993 – September 30, 1993

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Benzene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    p-Dichlorobenzene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    1,1,1-Trichloroethane

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Carbon tetrachloride

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Trichloroethylene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Benzene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    Vinyl chloride

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    1,1-Dichloroethylene

    October 1, 1991 – December 31, 1991

    Resolved
  • Monitoring, Regular

    1,2-Dichloroethane

    October 1, 1991 – December 31, 1991

    Resolved

Resolved addressed and confirmed by the state

Enforcement actions

No enforcement actions on record for this system.

Last known contact on file (system is inactive)

Not on record

610-459-5395

CONCORDVILLE, PA 19331