JOHNSTON, IA · Polk County

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

System facts

System ID (PWSID): IA7740011
System type: Community Water System
Population served: 24,064
Service connections: 7,657
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Maximum Contaminant Level Violation, Monthly (TCR)
Health-based
Coliform (TCR)
May 1, 2013 – May 31, 2013
Resolved

Resolved addressed and confirmed by the state

Period	Violation	Contaminant / rule	Health-based	Status
May 1, 2013 – May 31, 2013	Maximum Contaminant Level Violation, Monthly (TCR)	Coliform (TCR)	Health-based	Resolved

Resolved addressed and confirmed by the state

Enforcement actions

July 3, 2013State Public Notification received2 linked violations
May 23, 2013State Public Notification requested1 linked violation
May 23, 2013State Formal Notice of Violation issued1 linked violation
October 5, 2006State Public Notification received50 linked violations
October 5, 2006State Public Notification received37 linked violations
August 29, 2006State Compliance achievedgeneral compliance action — not tied to a specific violation on record
August 29, 2006State Compliance achieved2 linked violations
November 7, 2003State Public Notification received12 linked violations
October 20, 2003State Public Notification requested15 linked violations
February 16, 1982State Unresolvedgeneral compliance action — not tied to a specific violation on record

Contact

JOHNSTON, CITY OF

515-278-0822

JOHNSTON, IA 50131