CORWITH WATER SUPPLY
Iowa - Community Water System - PWSID: IA4109077
System Information
| PWSID | IA4109077 |
| System Name | CORWITH WATER SUPPLY |
| System Type | Community Water System |
| Water Source | Ground Water |
| 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 | CORWITH |
| ZIP Code | 50430-5007 |
| Address | ATTN WATER SUPT |
| Organization | CORWITH WATER SUPPLY |
| Phone | 515-583-2342 |
Population & Service
| Population Served | 266 |
| Service Connections | 159 |
Drinking Water Violations (60)
This water system has 60 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jul 1, 2018 | - | Other | No | No | - | - | - | Resolved | Aug 27, 2018 | - | |
| Jul 1, 2018 | - | Other | No | No | - | - | - | Resolved | Aug 27, 2018 | - | |
| Jan 14, 2018 | - | Other | No | No | - | - | - | Resolved | Mar 22, 2018 | - | |
| Jan 14, 2018 | - | Other | No | No | - | - | - | Resolved | Mar 22, 2018 | - | |
| Oct 1, 2016 | Sep 30, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 2017 | - | |
| Oct 1, 2016 | Sep 30, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 2017 | - | |
| Oct 1, 2016 | Sep 30, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 2017 | - | |
| Oct 1, 2016 | Sep 30, 2017 | MR | No | Yes | - | 10 mg/L | - | Resolved | Sep 30, 2017 | - | |
| Oct 1, 2012 | Sep 30, 2013 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Oct 1, 2012 | Sep 30, 2013 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Oct 1, 2012 | Sep 30, 2013 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Oct 1, 2012 | Sep 30, 2013 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 2013 | - | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Jan 1, 1996 | Dec 31, 2000 | MCL | Yes | No | .013 | 0.006 mg/L | - | Resolved | Nov 2, 2000 | - | |
| Apr 1, 1994 | Mar 31, 1997 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Apr 1, 1994 | Mar 31, 1997 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Apr 1, 1994 | Mar 31, 1997 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1993 | - | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1993 | - | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1993 | - | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1993 | - | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1993 | - | |
| Nov 1, 1993 | Nov 30, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Nov 30, 1993 | - | |
| Jul 1, 1993 | Jun 30, 1997 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 1997 | - | |
| Jul 1, 1993 | Jun 30, 1997 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 1997 | - | |
| Jul 1, 1993 | Jun 30, 1997 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 1997 | - | |
| Jul 1, 1993 | Jun 30, 1997 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 1997 | - | |
| Jul 1, 1993 | Jul 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1993 | - | |
| Jul 1, 1993 | Jul 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1993 | - | |
| Jul 1, 1993 | Jul 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1993 | - | |
| Jul 1, 1993 | Jul 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1993 | - | |
| Jul 1, 1993 | Jul 31, 1993 | MCL | Yes | No | - | 5% of samples | - | Resolved | Jul 31, 1993 | - | |
| Feb 1, 1993 | Feb 28, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1993 | - | |
| Feb 1, 1993 | Feb 28, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1993 | - | |
| Feb 1, 1993 | Feb 28, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1993 | - | |
| Feb 1, 1993 | Feb 28, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1993 | - | |
| Feb 1, 1993 | Feb 28, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Feb 28, 1993 | - | |
| Jul 1, 1985 | Jun 30, 1989 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 1989 | - | |
| Jul 1, 1985 | Jun 30, 1989 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Jun 30, 1989 | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - | |
| - | - | - | No | No | - | - | - | - | - | - |
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.