CASTLEWOOD
South Dakota — Community Water System — PWSID: SD4600002
System Information
| PWSID | SD4600002 |
| System Name | CASTLEWOOD |
| System Type | Community Water System |
| Water Source | Ground Water Purchased |
| Activity Status | Active |
| 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 | CASTLEWOOD |
| ZIP Code | 57223 |
| Address | PO BOX 17 |
| Organization | CASTLEWOOD |
| Phone | 6057932220 |
Population & Service
| Population Served | 698 |
| Service Connections | 328 |
Drinking Water Violations (151)
This water system has 151 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jun 7, 2021 | — | TT | Yes | No | — | — | — | Resolved | Sep 12, 2023 | — | |
| Jun 7, 2021 | — | TT | Yes | No | — | — | — | Resolved | Sep 12, 2023 | — | |
| Sep 1, 2002 | Sep 30, 2002 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2002 | — | |
| Sep 1, 2002 | Sep 30, 2002 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2002 | — | |
| Sep 1, 2002 | Sep 30, 2002 | MCL | Yes | No | — | 5% of samples | — | Resolved | Sep 30, 2002 | — | |
| Jul 1, 2002 | — | Other | No | No | — | — | — | Resolved | Aug 13, 2002 | — | |
| Jul 1, 2002 | — | Other | No | No | — | — | — | Resolved | Aug 13, 2002 | — | |
| Jan 1, 1998 | Jun 30, 1998 | MR | No | No | — | TT | — | Resolved | Jun 30, 1998 | — | |
| Jan 1, 1998 | Jun 30, 1998 | MR | No | No | — | TT | — | Resolved | Jun 30, 1998 | — | |
| Jan 1, 1998 | Jun 30, 1998 | MR | No | No | — | TT | — | Resolved | Jun 30, 1998 | — | |
| Jan 1, 1997 | Aug 25, 1997 | MR | No | No | — | TT | — | Resolved | Aug 25, 1997 | — | |
| Jan 1, 1997 | Aug 25, 1997 | MR | No | No | — | TT | — | Resolved | Aug 25, 1997 | — | |
| Jan 1, 1997 | Aug 25, 1997 | MR | No | No | — | TT | — | Resolved | Aug 25, 1997 | — | |
| Jul 13, 1996 | Aug 12, 1996 | Other | No | No | — | 5% of samples | — | Archived | Aug 12, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.6 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.007 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.2 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 10 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.005 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 1 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.07 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.002 mg/L | — | Resolved | Sep 30, 1996 | — | |
| Jul 1, 1996 | Sep 30, 1996 | MR | No | Yes | — | 0.7 mg/L | — | Resolved | Sep 30, 1996 | — |
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.