OLD AGENCY WATER SYSTEM
South Dakota — Community Water System — PWSID: 084690458
System Information
| PWSID | 084690458 |
| System Name | OLD AGENCY WATER SYSTEM |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| Owner Type | Native American |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Mar 4, 1980 |
| Last Reported | Nov 17, 2025 |
Location & Contact
| State | South Dakota |
| City | AGENCY VILLAGE |
| ZIP Code | 57262 |
| Address | — |
| Organization | CLOUD, JOHN |
| Phone | 605-698-4211 |
Population & Service
| Population Served | 1,180 |
| Service Connections | 236 |
Drinking Water Violations (16)
This water system has 16 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Sep 1, 2017 | Aug 31, 2018 | TTHM | MR | No | Yes | — | 0.080 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Sep 1, 2017 | Aug 31, 2018 | Total Haloacetic Acids (HAA5) | MR | No | Yes | — | 0.060 mg/L | — | Resolved | Aug 31, 2018 | Stage 2 Disinfectants and Disinfection Byproducts Rule |
| Apr 1, 2016 | Apr 30, 2016 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Apr 30, 2016 | Revised Total Coliform Rule |
| Apr 1, 2016 | Apr 30, 2016 | Revised Total Coliform Rule | MON | No | No | — | — | — | Resolved | Apr 30, 2016 | Revised Total Coliform Rule |
| Nov 1, 2014 | Nov 30, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Nov 30, 2014 | Total Coliform Rule |
| Apr 1, 2014 | Apr 30, 2014 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Apr 30, 2014 | Total Coliform Rule |
| Oct 1, 2013 | Oct 31, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2013 | Total Coliform Rule |
| Sep 1, 2013 | Sep 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | Total Coliform Rule |
| Sep 1, 2013 | Sep 30, 2013 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Sep 30, 2013 | Total Coliform Rule |
| Oct 1, 2009 | Dec 31, 2009 | Chlorine | MR | No | Yes | — | 4.0 mg/L | — | Resolved | Dec 31, 2009 | Stage 1 Disinfectants and Disinfection Byproducts Rule |
| Oct 1, 2008 | Oct 31, 2008 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Resolved | Oct 31, 2008 | Total Coliform Rule |
| Oct 1, 2001 | Oct 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2001 | Total Coliform Rule |
| Oct 1, 2001 | Oct 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2001 | Total Coliform Rule |
| Oct 1, 2001 | Oct 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2001 | Total Coliform Rule |
| Oct 1, 2001 | Oct 31, 2001 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Resolved | Oct 31, 2001 | Total Coliform Rule |
| Jul 1, 1976 | Jun 30, 1980 | Combined Radium (-226 and -228) | MR | No | No | — | 5 pCi/L | — | Archived | Jun 30, 1980 | 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.