DARIEN, IL · DuPage County

NORTH REGIONAL WATER FAC Water System

Current status

No open violations on record as of July 4, 2026.

This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.

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): IL0435850
System type: Community Water System
Population served: 770
Service connections: 256
Ownership: privately owned
Water source: groundwater (wells)

Violation history

OCCT/SOWT Study/Recommendation
Health-based
Lead and Copper Rule
June 1, 1995 – June 30, 1996
Resolved
Water Quality Parameter M/R
—
Lead and Copper Rule
January 1, 1994 – June 30, 1994
Resolved
Initial Tap Sampling for Pb and Cu
—
Lead and Copper Rule
October 1, 1993 – August 22, 1994
Resolved
Monitoring, Regular
—
Fluoride
May 1, 1992 – April 30, 1995
Archived
Monitoring, Repeat Major (TCR)
—
Coliform (TCR)
April 1, 1992 – April 30, 1992
Archived
Monitoring, Routine Minor (TCR)
—
Coliform (TCR)
March 1, 1992 – March 31, 1992
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
February 1, 1992 – February 29, 1992
Archived
Monitoring, Repeat Minor (TCR)
—
Coliform (TCR)
February 1, 1992 – February 29, 1992
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
November 1, 1991 – November 30, 1991
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
September 1, 1991 – September 30, 1991
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
March 1, 1991 – March 31, 1991
Archived
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
February 1, 1991 – February 28, 1991
Archived
Monitoring, Regular
—
Arsenic
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Barium
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Cadmium
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Chromium
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Fluoride
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Mercury
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Nitrate
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Selenium
May 1, 1989 – April 30, 1992
Archived
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
June 30, 1977 – June 29, 1981
Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Period	Violation	Contaminant / rule	Health-based	Status
June 1, 1995 – June 30, 1996	OCCT/SOWT Study/Recommendation	Lead and Copper Rule	Health-based	Resolved
January 1, 1994 – June 30, 1994	Water Quality Parameter M/R	Lead and Copper Rule	—	Resolved
October 1, 1993 – August 22, 1994	Initial Tap Sampling for Pb and Cu	Lead and Copper Rule	—	Resolved
May 1, 1992 – April 30, 1995	Monitoring, Regular	Fluoride	—	Archived
April 1, 1992 – April 30, 1992	Monitoring, Repeat Major (TCR)	Coliform (TCR)	—	Archived
March 1, 1992 – March 31, 1992	Monitoring, Routine Minor (TCR)	Coliform (TCR)	—	Archived
February 1, 1992 – February 29, 1992	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
February 1, 1992 – February 29, 1992	Monitoring, Repeat Minor (TCR)	Coliform (TCR)	—	Archived
November 1, 1991 – November 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
September 1, 1991 – September 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
March 1, 1991 – March 31, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
February 1, 1991 – February 28, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Arsenic	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Barium	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Cadmium	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Chromium	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Fluoride	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Mercury	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Nitrate	—	Archived
May 1, 1989 – April 30, 1992	Monitoring, Regular	Selenium	—	Archived
June 30, 1977 – June 29, 1981	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Archived

Resolved addressed and confirmed by the stateArchived closed in EPA's records (typically due to age or a data correction)

Enforcement actions

June 30, 1996State Compliance achieved3 linked violations
August 22, 1994State Compliance achieved1 linked violation
June 13, 1992State Violation/Reminder Notice2 linked violations
May 8, 1992State Public Notification requested1 linked violation
May 8, 1992State Violation/Reminder Notice1 linked violation
April 10, 1992State Violation/Reminder Notice2 linked violations
April 10, 1992State Public Notification requested2 linked violations
March 27, 1992State Bilateral Compliance Agreement signed8 linked violations
February 25, 1992State Compliance Meeting conducted8 linked violations
January 11, 1992State Public Notification requested1 linked violation
January 11, 1992State Violation/Reminder Notice1 linked violation
December 14, 1991State Violation/Reminder Notice1 linked violation
December 14, 1991State Public Notification requested1 linked violation
November 9, 1991State Violation/Reminder Notice1 linked violation
November 9, 1991State Public Notification requested1 linked violation
July 13, 1991State Public Notification requested1 linked violation
July 13, 1991State Violation/Reminder Notice1 linked violation
May 9, 1991State Public Notification requested1 linked violation
April 11, 1991State Public Notification requested2 linked violations
March 17, 1991State Public Notification requested1 linked violation
March 17, 1991State Violation/Reminder Notice2 linked violations
December 15, 1990State Public Notification requested4 linked violations
November 10, 1990State Public Notification requested2 linked violations
November 10, 1990State Violation/Reminder Notice3 linked violations
June 12, 1990State Public Notification issuedgeneral compliance action — not tied to a specific violation on record
March 15, 1990State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
March 15, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
August 1, 1989State Violation/Reminder Notice9 linked violations
July 20, 1989State Violation/Reminder Notice10 linked violations
July 15, 1989State Violation/Reminder Noticegeneral compliance action — not tied to a specific violation on record
July 15, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
April 13, 1989State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
February 11, 1989State Public Notification requested1 linked violation

Contact

ADAMS, JONATHAN

630-964-7503

DARIEN, IL 60561