WILLIAMSVILLE PWS
Missouri — Community Water System — PWSID: MO4010861
System Information
| PWSID | MO4010861 |
| System Name | WILLIAMSVILLE PWS |
| 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 | Mar 7, 1980 |
| Last Reported | Dec 31, 2025 |
Location & Contact
| State | Missouri |
| City | WILLIAMSVILLE |
| ZIP Code | 63967-0000 |
| Address | — |
| Organization | JOY, SANDY |
| Phone | 573-998-2745 |
Population & Service
| Population Served | 342 |
| Service Connections | 182 |
Drinking Water Violations (14)
This water system has 14 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, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 1, 2023 | Consumer Confidence Rule |
| Jul 1, 2023 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 1, 2023 | Consumer Confidence Rule |
| Jul 1, 2021 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Dec 6, 2021 | Consumer Confidence Rule |
| Jul 1, 2020 | — | Consumer Confidence Rule | Other | No | No | — | — | — | Resolved | Nov 10, 2020 | Consumer Confidence Rule |
| May 1, 2014 | May 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2014 | Total Coliform Rule |
| May 1, 2014 | May 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2014 | Total Coliform Rule |
| May 1, 2014 | May 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2014 | Total Coliform Rule |
| May 1, 2014 | May 31, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | May 31, 2014 | Total Coliform Rule |
| Jun 24, 1980 | Sep 23, 1983 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 23, 1983 | Radionuclides and Revised Rad Rule |
| Jun 24, 1980 | Sep 23, 1983 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 23, 1983 | Radionuclides and Revised Rad Rule |
| Jun 24, 1980 | Sep 23, 1982 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 23, 1982 | Radionuclides and Revised Rad Rule |
| Jun 24, 1980 | Sep 23, 1982 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 23, 1982 | Radionuclides and Revised Rad Rule |
| Jun 24, 1980 | Sep 23, 1982 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 23, 1982 | Radionuclides and Revised Rad Rule |
| Jun 24, 1980 | Sep 23, 1982 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Sep 23, 1982 | Radionuclides and Revised Rad Rule |
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.