DES MOINES, IA · Polk County

DES MOINES WATER WORKS 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): IA7727031
System type: Community Water System
Population served: 246,055
Service connections: 94,000
Ownership: local government
Water source: surface water (rivers, lakes, or reservoirs)

Violation history

Monitoring of Treatment (SWTR-Filter)
—
Long Term 2 Enhanced Surface Water Treatment Rule
November 1, 2018 – November 30, 2018
Archived
Maximum Contaminant Level Violation, Average
Health-based
TTHM
April 1, 2014 – June 30, 2014
Resolved
Single Turbidity Exceed (Enhanced SWTR)
Health-based
Interim Enhanced Surface Water Treatment Rule
December 1, 2013 – December 31, 2013
Resolved
Monitoring, Regular
—
Nitrate
October 1, 1989 – December 31, 1989
Resolved
Monitoring, Regular
—
Nitrate
July 1, 1989 – September 30, 1989
Resolved
Maximum Contaminant Level Violation, Single Sample
Health-based
Nitrate
October 1, 1983 – November 30, 1983
Archived
Monitoring, Regular
—
Selenium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Nitrate
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Mercury
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Fluoride
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Chromium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Cadmium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Barium
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
Arsenic
June 25, 1982 – June 24, 1983
Archived
Monitoring, Regular
—
38-STRONTIUM-90
October 1, 1979 – September 30, 1983
Archived
Monitoring, Regular
—
Tritium
October 1, 1979 – September 30, 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
November 1, 2018 – November 30, 2018	Monitoring of Treatment (SWTR-Filter)	Long Term 2 Enhanced Surface Water Treatment Rule	—	Archived
April 1, 2014 – June 30, 2014	Maximum Contaminant Level Violation, Average	TTHM	Health-based	Resolved
December 1, 2013 – December 31, 2013	Single Turbidity Exceed (Enhanced SWTR)	Interim Enhanced Surface Water Treatment Rule	Health-based	Resolved
October 1, 1989 – December 31, 1989	Monitoring, Regular	Nitrate	—	Resolved
July 1, 1989 – September 30, 1989	Monitoring, Regular	Nitrate	—	Resolved
October 1, 1983 – November 30, 1983	Maximum Contaminant Level Violation, Single Sample	Nitrate	Health-based	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Selenium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Nitrate	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Mercury	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Fluoride	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Chromium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Cadmium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Barium	—	Archived
June 25, 1982 – June 24, 1983	Monitoring, Regular	Arsenic	—	Archived
October 1, 1979 – September 30, 1983	Monitoring, Regular	38-STRONTIUM-90	—	Archived
October 1, 1979 – September 30, 1983	Monitoring, Regular	Tritium	—	Archived

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

Enforcement actions

June 5, 2019State Public Notification received3 linked violations
December 28, 2018State Formal Notice of Violation issued3 linked violations
December 28, 2018State Public Notification requested3 linked violations
June 13, 2017State Public Notification received2 linked violations
February 3, 2015State Compliance achieved14 linked violations
May 23, 2014State Public Notification requested3 linked violations
March 31, 2014State Public Notification received3 linked violations
March 21, 2014State Formal Notice of Violation issued4 linked violations
March 21, 2014State Public Notification requested5 linked violations
March 1, 2014State Compliance achieved4 linked violations
November 15, 1987State Intentional no-action1 linked violation
February 18, 1982State Unresolved1 linked violation

Contact

DES MOINES WATER WORKS

515-283-8751

DES MOINES, IA 50321