MAHASKA RURAL WATER SYSTEM, INC.
Iowa — Community Water System — PWSID: IA6273901
System Information
| PWSID | IA6273901 |
| System Name | MAHASKA RURAL WATER SYSTEM, INC. |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Active |
| Owner Type | Private |
| EPA Region | 07 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Jan 21, 1981 |
| Last Reported | Dec 19, 2025 |
Location & Contact
| State | Iowa |
| City | OSKALOOSA |
| ZIP Code | 52577 |
| Address | ATTN RANDAL PLEIMA |
| Organization | MAHASKA RURAL WATER SYSTEM INC |
| Phone | 641-673-8851 |
Population & Service
| Population Served | 9,818 |
| Service Connections | 3,927 |
Drinking Water Violations (23)
This water system has 23 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Apr 1, 2016 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | May 16, 2017 | Revised Total Coliform Rule |
| Apr 1, 2016 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | May 16, 2017 | Revised Total Coliform Rule |
| Apr 1, 2016 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | May 16, 2017 | Revised Total Coliform Rule |
| Apr 1, 2016 | — | Revised Total Coliform Rule | TT | Yes | No | — | — | — | Resolved | May 16, 2017 | Revised Total Coliform Rule |
| Aug 1, 2015 | Aug 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | Total Coliform Rule |
| Aug 1, 2015 | Aug 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | Total Coliform Rule |
| Aug 1, 2015 | Aug 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | Total Coliform Rule |
| Aug 1, 2015 | Aug 31, 2015 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Aug 31, 2015 | Total Coliform Rule |
| Jan 1, 2009 | Dec 31, 2017 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2017 | Inorganic Chemicals |
| Jan 1, 2009 | Dec 31, 2017 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2017 | Inorganic Chemicals |
| Jan 1, 2009 | Dec 31, 2017 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2017 | Inorganic Chemicals |
| Jan 1, 2009 | Dec 31, 2017 | Asbestos | MR | No | Yes | — | 7 MFL | — | Resolved | Dec 31, 2017 | Inorganic Chemicals |
| Dec 1, 2002 | Dec 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2002 | Total Coliform Rule |
| Dec 1, 2002 | Dec 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2002 | Total Coliform Rule |
| Dec 1, 2002 | Dec 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2002 | Total Coliform Rule |
| Dec 1, 2002 | Dec 31, 2002 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Dec 31, 2002 | Total Coliform Rule |
| Nov 1, 1995 | Nov 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1995 | Total Coliform Rule |
| Nov 1, 1995 | Nov 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1995 | Total Coliform Rule |
| Nov 1, 1995 | Nov 30, 1995 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 1995 | Total Coliform Rule |
| Sep 30, 1980 | Sep 29, 1983 | Gross Alpha, Excl. Radon and U | MR | No | No | — | 15 pCi/L | — | Archived | Sep 29, 1983 | Radionuclides and Revised Rad Rule |
| Sep 30, 1980 | Sep 29, 1983 | Combined Radium (-226 and -228) | MR | No | No | — | 5 pCi/L | — | Archived | Sep 29, 1983 | Radionuclides and Revised Rad Rule |
| — | — | — | 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.