MCCALLSBURG WATER SUPPLY
Iowa - Community Water System - PWSID: IA8552010
System Information
| PWSID | IA8552010 |
| System Name | MCCALLSBURG WATER SUPPLY |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| 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 | COLO |
| ZIP Code | 50065 |
| Address | ATTN AMY KOHLWES |
| Organization | MC CALLSBURG WATER SUPPLY |
| Phone | 515-460-4750 |
Population & Service
| Population Served | 353 |
| Service Connections | 147 |
Drinking Water Violations (74)
This water system has 74 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 10, 2020 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Nov 10, 2020 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Nov 10, 2020 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Nov 10, 2020 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Nov 10, 2020 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Nov 10, 2020 | - | Other | No | No | - | - | - | Unaddressed | - | - | |
| Aug 1, 2019 | Aug 31, 2019 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jul 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jul 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jul 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jul 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Jul 31, 2019 | - | |
| Aug 1, 2019 | Aug 31, 2019 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Jul 31, 2019 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.080 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Aug 1, 2018 | Aug 31, 2018 | MR | No | Yes | - | 0.060 mg/L | - | Resolved | Aug 31, 2018 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 24, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 24, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 24, 2010 | - | |
| Jul 1, 2010 | Sep 30, 2010 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Aug 24, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Jul 1, 2010 | Jul 31, 2010 | MR | No | No | - | 5% of samples | - | Resolved | Jul 31, 2010 | - | |
| Nov 1, 1991 | Nov 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1991 | - | |
| Nov 1, 1991 | Nov 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1991 | - | |
| Nov 1, 1991 | Nov 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Nov 30, 1991 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1991 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1991 | - | |
| Oct 1, 1991 | Oct 31, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Oct 31, 1991 | - | |
| Sep 1, 1991 | Sep 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1991 | - | |
| Sep 1, 1991 | Sep 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1991 | - | |
| Sep 1, 1991 | Sep 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1991 | - | |
| Sep 1, 1991 | Sep 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1991 | - | |
| Sep 1, 1991 | Sep 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1991 | - | |
| Sep 1, 1991 | Sep 30, 1991 | MR | No | No | - | 5% of samples | - | Resolved | Sep 30, 1991 | - | |
| Apr 1, 1990 | - | MR | No | No | - | TT | - | Resolved | Jul 30, 1990 | - | |
| Jul 1, 1987 | Jun 30, 1990 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Jun 30, 1990 | - | |
| Jul 1, 1987 | Jun 30, 1990 | MR | No | Yes | - | 0.1 mg/L | - | Resolved | Jun 30, 1990 | - | |
| Jul 1, 1987 | Jun 30, 1990 | MR | No | Yes | - | 0.010 mg/L | - | Resolved | Jun 30, 1990 | - | |
| Jul 1, 1987 | Jun 30, 1990 | MR | No | Yes | - | 0.005 mg/L | - | Resolved | Jun 30, 1990 | - | |
| Jul 1, 1987 | Jun 30, 1990 | MR | No | Yes | - | 2 mg/L | - | Resolved | Jun 30, 1990 | - | |
| Jul 1, 1987 | Jun 30, 1990 | MR | No | Yes | - | 2 mg/L | - | Resolved | Jun 30, 1990 | - | |
| Jul 1, 1987 | Jun 30, 1990 | MR | No | Yes | - | 4.0 mg/L | - | Resolved | Jun 30, 1990 | - |
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.