ONAKA
South Dakota — Community Water System — PWSID: SD4600232
System Information
| PWSID | SD4600232 |
| System Name | ONAKA |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Inactive |
| Owner Type | Local |
| EPA Region | 08 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 13, 1979 |
| Last Reported | Mar 2, 2026 |
Location & Contact
| State | South Dakota |
| City | ONAKA |
| ZIP Code | 57466 |
| Address | 33404 149TH STREET |
| Organization | ONAKA |
| Phone | — |
Population & Service
| Population Served | 26 |
| Service Connections | 20 |
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, 2007 | Jul 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Jul 1, 2007 | Jul 31, 2007 | MR | No | No | — | 5% of samples | — | Resolved | Jul 31, 2007 | — | |
| Feb 1, 2001 | Feb 28, 2001 | MR | No | Yes | — | 5% of samples | — | Resolved | Feb 28, 2001 | — | |
| Feb 1, 2001 | Feb 28, 2001 | MR | No | Yes | — | 5% of samples | — | Resolved | Feb 28, 2001 | — | |
| Feb 1, 2001 | Feb 28, 2001 | MR | No | Yes | — | 5% of samples | — | Resolved | Feb 28, 2001 | — | |
| Aug 1, 1996 | Aug 31, 1996 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1996 | — | |
| Aug 1, 1996 | Aug 31, 1996 | MR | No | No | — | 5% of samples | — | Archived | Aug 31, 1996 | — | |
| Jul 1, 1993 | May 18, 1994 | MR | No | No | — | TT | — | Resolved | May 18, 1994 | — | |
| Jul 1, 1993 | May 18, 1994 | MR | No | No | — | TT | — | Resolved | May 18, 1994 | — | |
| Jul 1, 1993 | May 18, 1994 | MR | No | No | — | TT | — | Resolved | May 18, 1994 | — | |
| Jul 1, 1976 | Jun 30, 1980 | MR | No | No | — | 15 pCi/L | — | Archived | Jun 30, 1980 | — | |
| Jul 1, 1976 | Jun 30, 1980 | MR | No | No | — | 5 pCi/L | — | Archived | Jun 30, 1980 | — | |
| — | — | — | 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.