CALAMUS WATER SUPPLY
Iowa — Community Water System — PWSID: IA2320062
System Information
| PWSID | IA2320062 |
| System Name | CALAMUS 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 | Dec 19, 2025 |
Location & Contact
| State | Iowa |
| City | CALAMUS |
| ZIP Code | 52729 |
| Address | ATTN MIKE LACEY |
| Organization | CALAMUS WATER SUPPLY |
| Phone | 563-246-2755 |
Population & Service
| Population Served | 356 |
| Service Connections | 185 |
Drinking Water Violations (40)
This water system has 40 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, 2025 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Unaddressed | — | Consumer Confidence Rule |
| Jul 1, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 30, 2021 | Consumer Confidence Rule |
| Jul 1, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Aug 30, 2021 | Consumer Confidence Rule |
| Apr 1, 2020 | Apr 30, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Apr 30, 2020 | Revised Total Coliform Rule |
| Apr 1, 2020 | Apr 30, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Apr 30, 2020 | Revised Total Coliform Rule |
| Apr 1, 2020 | Apr 30, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Apr 30, 2020 | Revised Total Coliform Rule |
| Apr 1, 2020 | Apr 30, 2020 | Revised Total Coliform Rule | MON | No | Yes | — | — | — | Resolved | Apr 30, 2020 | Revised Total Coliform Rule |
| Oct 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jul 8, 2003 | Lead and Copper Rule |
| Oct 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jul 8, 2003 | Lead and Copper Rule |
| Oct 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jul 8, 2003 | Lead and Copper Rule |
| Oct 1, 2002 | — | Lead and Copper Rule | MR | No | No | — | TT | — | Resolved | Jul 8, 2003 | Lead and Copper Rule |
| Sep 1, 1996 | Sep 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | Nitrate Rule |
| Sep 1, 1996 | Sep 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | Nitrate Rule |
| Sep 1, 1996 | Sep 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | Nitrate Rule |
| Sep 1, 1996 | Sep 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | Nitrate Rule |
| Oct 1, 1995 | Sep 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | Nitrate Rule |
| Oct 1, 1995 | Sep 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | Nitrate Rule |
| Oct 1, 1995 | Sep 30, 1996 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | Nitrate Rule |
| Sep 1, 1994 | Sep 30, 1994 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 1994 | Nitrate Rule |
| Sep 1, 1994 | Sep 30, 1994 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 1994 | Nitrate Rule |
| Sep 1, 1994 | Sep 30, 1994 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 1994 | Nitrate Rule |
| Sep 1, 1994 | Sep 30, 1994 | Nitrite | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 1994 | Nitrate Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Nov 1, 1993 | Nov 30, 1993 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1993 | Total Coliform Rule |
| Oct 1, 1993 | Sep 30, 1994 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1994 | Nitrate Rule |
| Oct 1, 1993 | Sep 30, 1994 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1994 | Nitrate Rule |
| Oct 1, 1993 | Sep 30, 1994 | Nitrate | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1994 | Nitrate Rule |
| Oct 1, 1991 | Sep 30, 1994 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Sep 30, 1994 | Inorganic Chemicals |
| Oct 1, 1991 | Sep 30, 1994 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Sep 30, 1994 | Inorganic Chemicals |
| Oct 1, 1991 | Sep 30, 1994 | Antimony, Total | MR | No | Yes | — | 0.006 mg/L | — | Resolved | Sep 30, 1994 | Inorganic Chemicals |
| — | — | — | 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.