CALLAO PWS
Missouri — Community Water System — PWSID: MO2010125
System Information
| PWSID | MO2010125 |
| System Name | CALLAO PWS |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 7, 1980 |
| Last Reported | Mar 25, 2026 |
Location & Contact
| State | Missouri |
| City | CALLAO |
| ZIP Code | 63534-0000 |
| Address | 202 W 2ND ST |
| Organization | SUMMERS, SUZANNE |
| Phone | 660-346-9860 |
Population & Service
| Population Served | 248 |
| Service Connections | 146 |
Drinking Water Violations (55)
This water system has 55 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 | — | Other | No | No | — | — | — | Unaddressed | — | — | |
| Jun 1, 2025 | Jun 30, 2025 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Jun 1, 2025 | Jun 30, 2025 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Jun 1, 2025 | Jun 30, 2025 | MON | No | Yes | — | — | — | Resolved | Jun 30, 2025 | — | |
| Oct 1, 2024 | — | MR | No | No | — | TT | — | Resolved | Apr 28, 2025 | — | |
| Mar 1, 2024 | Mar 31, 2024 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2024 | — | |
| Mar 1, 2024 | Mar 31, 2024 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2024 | — | |
| Mar 1, 2024 | Mar 31, 2024 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2024 | — | |
| Mar 1, 2024 | Mar 31, 2024 | MON | No | Yes | — | — | — | Resolved | Mar 31, 2024 | — | |
| Dec 14, 2023 | — | Other | No | No | — | — | — | Resolved | Mar 27, 2024 | — | |
| Oct 1, 2023 | — | Other | No | No | — | — | — | Resolved | Mar 27, 2024 | — | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2023 | — | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2023 | — | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2023 | — | |
| Apr 1, 2023 | Apr 30, 2023 | MON | No | Yes | — | — | — | Resolved | Apr 30, 2023 | — | |
| Aug 1, 2022 | Aug 31, 2022 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2022 | — | |
| Aug 1, 2022 | Aug 31, 2022 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2022 | — | |
| Aug 1, 2022 | Aug 31, 2022 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2022 | — | |
| Aug 1, 2022 | Aug 31, 2022 | MON | No | Yes | — | — | — | Resolved | Aug 31, 2022 | — | |
| Jul 1, 2022 | — | Other | No | No | — | — | — | Resolved | Jun 30, 2023 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Jan 1, 2022 | Dec 31, 2022 | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Dec 31, 2022 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Sep 1, 2021 | Sep 30, 2021 | MON | No | Yes | — | — | — | Resolved | Sep 30, 2021 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | — | |
| Oct 1, 2015 | Oct 31, 2015 | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2015 | — | |
| Jul 1, 2012 | — | Other | No | No | — | — | — | Resolved | May 5, 2014 | — | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2011 | — | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2011 | — | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2011 | — | |
| Dec 1, 2011 | Dec 31, 2011 | MR | No | No | — | 5% of samples | — | Resolved | Dec 31, 2011 | — | |
| Oct 1, 2001 | — | MR | No | No | — | TT | — | Resolved | Sep 8, 2004 | — | |
| Mar 1, 2001 | Mar 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2001 | — | |
| Mar 1, 2001 | Mar 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2001 | — | |
| Mar 1, 2001 | Mar 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2001 | — | |
| Mar 1, 2001 | Mar 31, 2001 | MR | No | No | — | 5% of samples | — | Resolved | Mar 31, 2001 | — | |
| Jul 1, 2000 | — | Other | No | No | — | — | — | Resolved | Jun 22, 2001 | — | |
| Jan 1, 1995 | — | MR | No | No | — | TT | — | Resolved | Dec 31, 1994 | — | |
| — | — | — | 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.