DOWNERS GR TWP, IL · DuPage County

MAPLE HILL IMPRV ASSN Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of September 1, 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 DuPage County, IL.

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 Illinois’s official records. Always confirm current status with Illinois before making decisions based on this information.

System facts

System ID (PWSID): IL0435800
System type: Community Water System
Population served: 200
Service connections: 66
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Average
Health-based
Trichloroethylene
July 1, 1994 – September 1, 1994
Archived
Maximum Contaminant Level Violation, Average
Health-based
Trichloroethylene
January 1, 1994 – March 31, 1994
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1992 – November 30, 1992
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
August 1, 1992 – August 31, 1992
Archived

Archived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
July 1, 1994 – September 1, 1994	Maximum Contaminant Level Violation, Average	Trichloroethylene	Health-based	Archived
January 1, 1994 – March 31, 1994	Maximum Contaminant Level Violation, Average	Trichloroethylene	Health-based	Archived
November 1, 1992 – November 30, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
August 1, 1992 – August 31, 1992	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived

Archived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

October 3, 1994State Public Notification requested1 linked violation
October 3, 1994State Violation/Reminder Notice1 linked violation
June 27, 1994State Violation/Reminder Notice1 linked violation
June 27, 1994State Public Notification requested1 linked violation
January 5, 1994State Violation/Reminder Notice1 linked violation
January 5, 1994State Public Notification requested1 linked violation
January 8, 1993State Public Notification received1 linked violation
January 2, 1993State Public Notification requested1 linked violation
January 2, 1993State Violation/Reminder Notice1 linked violation
October 16, 1992State Public Notification received1 linked violation
October 4, 1992State Violation/Reminder Notice1 linked violation
October 4, 1992State Public Notification requested1 linked violation

Last known contact on file (system is inactive)

Not on record

Phone not on record

DOWNERS GR TWP, IL 60515