SIOUX CITY WATER SUPPLY
Iowa — Community Water System — PWSID: IA9778054
System Information
| PWSID | IA9778054 |
| System Name | SIOUX CITY WATER SUPPLY |
| System Type | Community Water System |
| Water Source | Ground Water Under Influence |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 27, 1979 |
| Last Reported | Mar 17, 2026 |
Location & Contact
| State | Iowa |
| City | SIOUX CITY |
| ZIP Code | 51103 |
| Address | ATTN KEVIN KENNEDY WATER SUPT |
| Organization | SIOUX CITY WATER SUPPLY |
| Phone | 712-279-6150 |
Population & Service
| Population Served | 85,791 |
| Service Connections | 29,424 |
Drinking Water Violations (133)
This water system has 133 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | May 31, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | May 31, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | May 31, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.060 mg/L | — | Resolved | May 31, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | May 31, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | May 31, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | May 31, 2024 | — | |
| May 1, 2024 | May 31, 2024 | MR | No | No | — | 0.080 mg/L | — | Resolved | May 31, 2024 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Oct 1, 2019 | Dec 31, 2019 | MCL | Yes | No | .084 MG/L | 0.080 mg/L | — | Resolved | Dec 31, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Jul 1, 2019 | Sep 30, 2019 | MCL | Yes | No | .083 MG/L | 0.080 mg/L | — | Resolved | Sep 30, 2019 | — | |
| Mar 6, 2017 | Mar 7, 2017 | TT | Yes | No | — | TT | — | Resolved | Mar 7, 2017 | — | |
| Mar 6, 2017 | Mar 7, 2017 | TT | Yes | No | — | TT | — | Resolved | Mar 7, 2017 | — | |
| Mar 6, 2017 | Mar 7, 2017 | TT | Yes | No | — | TT | — | Resolved | Mar 7, 2017 | — | |
| Nov 25, 2016 | Nov 26, 2016 | TT | Yes | No | — | TT | — | Resolved | Nov 26, 2016 | — | |
| Nov 25, 2016 | Nov 26, 2016 | TT | Yes | No | — | TT | — | Resolved | Nov 26, 2016 | — | |
| Nov 25, 2016 | Nov 26, 2016 | TT | Yes | No | — | TT | — | Resolved | Nov 26, 2016 | — | |
| Nov 25, 2016 | Nov 26, 2016 | TT | Yes | No | — | TT | — | Resolved | Nov 26, 2016 | — | |
| May 19, 2016 | May 20, 2016 | TT | Yes | No | — | TT | — | Resolved | May 20, 2016 | — | |
| May 19, 2016 | May 20, 2016 | TT | Yes | No | — | TT | — | Resolved | May 20, 2016 | — | |
| May 19, 2016 | May 20, 2016 | TT | Yes | No | — | TT | — | Resolved | May 20, 2016 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | — | — | Resolved | May 31, 2015 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | — | — | Resolved | May 31, 2015 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | — | — | Resolved | May 31, 2015 | — | |
| May 1, 2015 | May 31, 2015 | MR | No | No | — | — | — | Resolved | May 31, 2015 | — | |
| Jul 1, 2012 | Jul 31, 2012 | MR | No | No | — | — | — | Resolved | Jul 31, 2012 | — | |
| Jul 1, 2012 | Jul 31, 2012 | MR | No | No | — | — | — | Resolved | Jul 31, 2012 | — | |
| Jul 1, 2012 | Jul 31, 2012 | MR | No | No | — | — | — | Resolved | Jul 31, 2012 | — | |
| Jul 1, 2012 | Jul 31, 2012 | MR | No | No | — | — | — | Resolved | Jul 31, 2012 | — | |
| Jun 1, 2012 | Jun 30, 2012 | MR | No | No | — | — | — | Resolved | Jun 30, 2012 | — | |
| Jun 1, 2012 | Jun 30, 2012 | MR | No | No | — | — | — | Resolved | Jun 30, 2012 | — | |
| Jun 1, 2012 | Jun 30, 2012 | MR | No | No | — | — | — | Resolved | Jun 30, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2012 | — | |
| Apr 1, 2012 | Apr 30, 2012 | TT | Yes | No | — | — | — | Resolved | Apr 30, 2012 | — | |
| Jul 1, 2007 | Jun 30, 2008 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Jul 1, 2007 | Jun 30, 2008 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Jul 1, 2007 | Jun 30, 2008 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Jul 1, 2007 | Jun 30, 2008 | MR | No | Yes | — | 10 mg/L | — | Resolved | Jun 30, 2008 | — | |
| Nov 1, 2004 | Nov 30, 2004 | TT | Yes | No | — | — | — | Resolved | Nov 30, 2004 | — | |
| Nov 1, 2004 | Nov 30, 2004 | TT | Yes | No | — | — | — | Resolved | Nov 30, 2004 | — | |
| Nov 1, 2004 | Nov 30, 2004 | TT | Yes | No | — | — | — | Resolved | Nov 30, 2004 | — | |
| Nov 1, 2004 | Nov 30, 2004 | TT | Yes | No | — | — | — | Resolved | Nov 30, 2004 | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.