IOWA CITY, IA · Johnson County

KNOLLRIDGE GARDEN APARTMENTS Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of April 6, 1995. 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 Johnson County, IA.

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

System facts

System ID (PWSID): IA5225380
System type: Community Water System
Population served: 150
Service connections: 10
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Maximum Contaminant Level Violation, Acute (TCR)
Health-based
Coliform (TCR)
September 1, 1993 – September 30, 1993
Resolved
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
August 1, 1993 – August 31, 1993
Resolved
Monitoring, Routine Major (TCR)
—
Coliform (TCR)
June 1, 1991 – June 30, 1991
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 1990 – August 4, 1992
Resolved
Monitoring, Regular
—
Barium
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Arsenic
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Cadmium
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Chromium
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Fluoride
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Mercury
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Nitrate
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Selenium
April 1, 1988 – March 31, 1991
Resolved
Monitoring, Regular
—
Gross Alpha, Excl. Radon and U
July 1, 1987 – June 30, 1991
Resolved
Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
July 1, 1987 – February 10, 1988
Resolved
Monitoring, Regular
—
Mercury
October 1, 1984 – September 30, 1987
Resolved
Monitoring, Regular
—
Nitrate
October 1, 1984 – September 30, 1987
Resolved
Monitoring, Regular
—
Selenium
October 1, 1984 – September 30, 1987
Resolved
Monitoring, Regular
—
Arsenic
October 1, 1984 – September 30, 1987
Resolved
Monitoring, Regular
—
Chromium
October 1, 1984 – September 30, 1987
Resolved
Monitoring, Regular
—
Cadmium
October 1, 1984 – September 30, 1987
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
September 1, 1993 – September 30, 1993	Maximum Contaminant Level Violation, Acute (TCR)	Coliform (TCR)	Health-based	Resolved
August 1, 1993 – August 31, 1993	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved
June 1, 1991 – June 30, 1991	Monitoring, Routine Major (TCR)	Coliform (TCR)	—	Resolved
October 1, 1990 – August 4, 1992	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Barium	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Arsenic	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Cadmium	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Chromium	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Fluoride	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Mercury	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Nitrate	—	Resolved
April 1, 1988 – March 31, 1991	Monitoring, Regular	Selenium	—	Resolved
July 1, 1987 – June 30, 1991	Monitoring, Regular	Gross Alpha, Excl. Radon and U	—	Resolved
July 1, 1987 – February 10, 1988	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
October 1, 1984 – September 30, 1987	Monitoring, Regular	Mercury	—	Resolved
October 1, 1984 – September 30, 1987	Monitoring, Regular	Nitrate	—	Resolved
October 1, 1984 – September 30, 1987	Monitoring, Regular	Selenium	—	Resolved
October 1, 1984 – September 30, 1987	Monitoring, Regular	Arsenic	—	Resolved
October 1, 1984 – September 30, 1987	Monitoring, Regular	Chromium	—	Resolved
October 1, 1984 – September 30, 1987	Monitoring, Regular	Cadmium	—	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

April 6, 1995State Compliance achieved1 linked violation
April 6, 1995State Compliance achieved18 linked violations
April 6, 1995State Compliance achieved3 linked violations
January 25, 1995State Administrative/Compliance Order without penalty issued4 linked violations
January 25, 1995State Administrative/Compliance Order without penalty issued4 linked violations
January 25, 1995State Administrative/Compliance Order without penalty issued2 linked violations
October 25, 1993State Public Notification requested4 linked violations
October 25, 1993State Formal Notice of Violation issued3 linked violations
October 4, 1993State Public Notification received4 linked violations
October 4, 1993State Public Notification received2 linked violations
August 31, 1993State Formal Notice of Violation issued3 linked violations
August 31, 1993State Public Notification requested2 linked violations
August 31, 1993State Formal Notice of Violation issued2 linked violations
July 16, 1993State Public Notification requested2 linked violations
September 9, 1992State Public Notification received2 linked violations
September 9, 1992State Public Notification received1 linked violation
September 9, 1992State Public Notification received1 linked violation
August 4, 1992State Compliance achieved2 linked violations
August 4, 1992State Compliance achieved2 linked violations
April 24, 1992State Formal Notice of Violation issued4 linked violations
April 24, 1992State Public Notification requested1 linked violation
April 24, 1992State Formal Notice of Violation issued1 linked violation
April 24, 1992State Public Notification requested2 linked violations
April 24, 1992State Formal Notice of Violation issued1 linked violation
April 24, 1992State Formal Notice of Violation issued2 linked violations
April 24, 1992State Public Notification requested4 linked violations
April 24, 1992State Formal Notice of Violation issued4 linked violations
April 24, 1992State Public Notification requested4 linked violations
April 24, 1992State Public Notification requested6 linked violations
April 24, 1992State Formal Notice of Violation issued6 linked violations
April 15, 1992State Formal Notice of Violation issued2 linked violations
April 15, 1992State Public Notification requested1 linked violation
April 15, 1992State Public Notification requested1 linked violation
March 19, 1992State Compliance achieved2 linked violations
October 4, 1990State Public Notification receivedgeneral compliance action — not tied to a specific violation on record
September 17, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
June 25, 1990State Formal Notice of Violation issued10 linked violations
June 25, 1990State Public Notification requested1 linked violation
May 8, 1990State Compliance achieved2 linked violations
April 6, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
January 5, 1990State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
January 5, 1990State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
January 5, 1990State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
December 29, 1989State Compliance achievedgeneral compliance action — not tied to a specific violation on record
December 8, 1989State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
October 31, 1989State Compliance achieved1 linked violation
October 31, 1989State Compliance achieved1 linked violation
August 31, 1989State Compliance achieved2 linked violations
June 19, 1989State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
May 31, 1989State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 17, 1988State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
February 10, 1988State Compliance achieved2 linked violations
February 10, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
February 1, 1987State Compliance achieved1 linked violation
February 1, 1987State Compliance achieved1 linked violation
March 1, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Last known contact on file (system is inactive)

Not on record

Phone not on record

IOWA CITY, IA 52240