COLWELL, CITY OF
Iowa - Community Water System - PWSID: IA3409066
System Information
| PWSID | IA3409066 |
| System Name | COLWELL, CITY OF |
| 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 | ALTA VISTA |
| ZIP Code | 50603 |
| Address | ATTN DENNIS MARVIN |
| Organization | COLWELL WATER SUPPLY |
| Phone | 641-364-4795 |
Population & Service
| Population Served | 55 |
| Service Connections | 38 |
Drinking Water Violations (69)
This water system has 69 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Nov 23, 1999 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Nov 23, 1999 | - | |
| Oct 19, 1999 | - | Other | No | No | - | - | - | Resolved | Nov 23, 1999 | - | |
| Aug 1, 1997 | Aug 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 1997 | - | |
| Aug 1, 1997 | Aug 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Aug 31, 1997 | - | |
| Aug 1, 1997 | Aug 31, 1997 | MR | No | No | - | 5% of samples | - | Resolved | Aug 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 | - | |
| Mar 1, 1997 | Mar 31, 1997 | MR | No | Yes | - | 1 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Jan 1, 1997 | Jan 31, 1997 | MR | No | Yes | - | - | - | Resolved | Jan 31, 1997 | - | |
| Jan 1, 1997 | Jan 31, 1997 | MR | No | Yes | - | - | - | Resolved | Jan 31, 1997 | - | |
| Jan 1, 1997 | Jan 31, 1997 | MR | No | Yes | - | - | - | Resolved | Jan 31, 1997 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Jan 31, 1995 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Jan 31, 1995 | - | |
| Jan 1, 1995 | Jan 31, 1995 | MR | No | Yes | - | 0.07 mg/L | - | Resolved | Jan 31, 1995 | - | |
| Apr 1, 1994 | Mar 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Apr 1, 1994 | Mar 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Apr 1, 1994 | Mar 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1997 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Oct 1, 1993 | Oct 31, 1993 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1993 | - | |
| Apr 1, 1993 | Mar 31, 1996 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Apr 1, 1993 | Mar 31, 1996 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Apr 1, 1993 | Mar 31, 1996 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1996 | - | |
| Apr 1, 1992 | Mar 31, 1995 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1995 | - | |
| Apr 1, 1992 | Mar 31, 1995 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Mar 31, 1995 | - | |
| Apr 1, 1992 | Mar 31, 1995 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Mar 31, 1995 | - | |
| Apr 1, 1992 | Mar 31, 1995 | MR | No | Yes | - | 0.006 mg/L | - | Resolved | Mar 31, 1995 | - | |
| Apr 1, 1992 | Mar 31, 1995 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1995 | - | |
| Apr 1, 1992 | Mar 31, 1995 | MR | No | Yes | - | 10 mg/L | - | Resolved | Mar 31, 1995 | - | |
| Jan 1, 1992 | Dec 31, 1995 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1995 | - | |
| Jan 1, 1992 | Dec 31, 1995 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1995 | - | |
| Jan 1, 1992 | Dec 31, 1995 | MR | No | Yes | - | 15 pCi/L | - | Resolved | Dec 31, 1995 | - | |
| Jul 1, 1988 | - | MR | No | No | - | TT | - | Resolved | Oct 4, 1988 | - | |
| Jul 1, 1988 | - | MR | No | No | - | TT | - | Resolved | Oct 4, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 2 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.002 mg/L | - | Resolved | Sep 30, 1988 | - | |
| Oct 1, 1985 | Sep 30, 1988 | MR | No | Yes | - | 0.05 mg/L | - | Resolved | Sep 30, 1988 | - |
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.