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 August 1, 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)

KNOLLWOOD MOBILE HOME COURT is one of 1,221 community water systems in Iowa in the 500 or fewer people size category, formerly serving 25 people from groundwater.

EPA's federal records list this system as inactive in 1991; the record below is historical.

As of August 1, 2026, its federal record holds 8 entries between 1980 and 1991, all of which EPA lists as closed. Nothing has been added since 1991.

Of the 8, 6 are monitoring and reporting requirements — the category that accounts for about four in five of all violations in EPA's national dataset — rather than findings about the water itself. The record involves inorganic chemicals, the Total Coliform Rules, and the Radionuclides and Revised Rad Rule.

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
April 1, 1991 – April 19, 1991
Archived
Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
October 1, 1990 – October 31, 1990
Archived
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
—
Combined Radium (-226 and -228)
September 30, 1980 – September 29, 1983
Archived

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

Period	Violation	Contaminant / rule	Health-based	Status
April 1, 1991 – April 19, 1991	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
October 1, 1990 – October 31, 1990	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Archived
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
September 30, 1980 – September 29, 1983	Monitoring, Regular	Combined Radium (-226 and -228)	—	Archived

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

Enforcement actions

April 19, 1991State Other3 linked violations
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 Public Notification requested2 linked violations
April 18, 1990State Formal Notice of Violation issued1 linked violation
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
March 27, 1990State Public Notification requestedgeneral compliance action — not tied to a specific violation on record
September 9, 1988State Public Notification requested1 linked violation
September 2, 1988State Administrative/Compliance Order without penalty issued1 linked violation
September 2, 1988State Administrative/Compliance Order without penalty issued2 linked violations
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 issued2 linked violations
September 2, 1988State Administrative/Compliance Order without penalty issued1 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
August 9, 1988State Compliance achieved1 linked violation
July 1, 1987State Compliance achieved1 linked violation
May 19, 1987State Compliance achievedgeneral 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