IOWA CITY, IA · Johnson County

KNOLLWOOD MOBILE HOME COURT Water System

Inactive system

This water system is marked inactive in EPA’s federal records as of April 19, 1991. 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): IA5200647
System type: Community Water System
Population served: 25
Service connections: 16
Ownership: privately owned
Water source: groundwater (wells)

Violation history

Follow-up Or Routine LCR Tap M/R
—
Lead and Copper Rule
October 1, 1987 – August 9, 1988
Resolved
Monitoring, Regular
—
Arsenic
April 1, 1985 – March 31, 1988
Resolved
Monitoring, Regular
—
Barium
April 1, 1985 – March 31, 1988
Resolved
Monitoring, Regular
—
Cadmium
April 1, 1985 – March 31, 1988
Resolved
Monitoring, Regular
—
Chromium
April 1, 1985 – March 31, 1988
Resolved
Monitoring, Regular
—
Fluoride
April 1, 1985 – March 31, 1988
Resolved
Monitoring, Regular
—
Mercury
April 1, 1985 – March 31, 1988
Resolved
Monitoring, Regular
—
Selenium
April 1, 1985 – March 31, 1988
Resolved
Monitoring, Regular
—
Combined Radium (-226 and -228)
September 30, 1980 – September 29, 1983
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
October 1, 1987 – August 9, 1988	Follow-up Or Routine LCR Tap M/R	Lead and Copper Rule	—	Resolved
April 1, 1985 – March 31, 1988	Monitoring, Regular	Arsenic	—	Resolved
April 1, 1985 – March 31, 1988	Monitoring, Regular	Barium	—	Resolved
April 1, 1985 – March 31, 1988	Monitoring, Regular	Cadmium	—	Resolved
April 1, 1985 – March 31, 1988	Monitoring, Regular	Chromium	—	Resolved
April 1, 1985 – March 31, 1988	Monitoring, Regular	Fluoride	—	Resolved
April 1, 1985 – March 31, 1988	Monitoring, Regular	Mercury	—	Resolved
April 1, 1985 – March 31, 1988	Monitoring, Regular	Selenium	—	Resolved
September 30, 1980 – September 29, 1983	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived

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

Enforcement actions

March 8, 1991State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
March 8, 1991State Administrative/Compliance Order without penalty issued1 linked violation
May 24, 1990State Formal Notice of Violation issued3 linked violations
April 18, 1990State Formal Notice of Violation issued1 linked violation
April 5, 1990State Compliance achievedgeneral compliance action — not tied to a specific violation on record
April 5, 1990State Compliance achieved2 linked violations
March 27, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
March 27, 1990State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
September 9, 1988State Public Notification requested1 linked violation
September 9, 1988State Formal Notice of Violation issuedgeneral compliance action — not tied to a specific violation on record
September 2, 1988State Administrative/Compliance Order without penalty issuedgeneral compliance action — not tied to a specific violation on record
September 2, 1988State Administrative/Compliance Order without penalty issued1 linked violation
September 2, 1988State Administrative/Compliance Order without penalty issued2 linked violations
August 9, 1988State Compliance achieved1 linked violation
August 9, 1988State Compliance achieved1 linked violation
August 9, 1988State Compliance achieved1 linked violation
August 9, 1988State Compliance achieved1 linked violation
August 9, 1988State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 9, 1988State Compliance achieved1 linked violation

Last known contact on file (system is inactive)

Not on record

Phone not on record

IOWA CITY, IA 52240