PORCUPINE DAY SCHOOL
South Dakota — Community Water System — PWSID: 084690469
System Information
| PWSID | 084690469 |
| System Name | PORCUPINE DAY SCHOOL |
| System Type | Community Water System |
| Water Source | Ground Water |
| Activity Status | Non-Inventory |
| 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 | PINE RIDGE |
| ZIP Code | 57770 |
| Address | OGLALA SIOUX TRIBE |
| Organization | JACOBS, CHUCK |
| Phone | 605-867-1999 |
Population & Service
| Population Served | 767 |
| Service Connections | 118 |
Drinking Water Violations (4)
This water system has 4 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2001 | Dec 31, 2001 | Nitrate-Nitrite | MR | No | Yes | — | — | — | Archived | Dec 31, 2001 | Nitrate Rule |
| Nov 1, 1992 | Nov 30, 1992 | Coliform (TCR) | MR | No | No | — | 5% of samples | — | Archived | Nov 30, 1992 | Total Coliform Rule |
| Jan 1, 1983 | Dec 31, 1985 | Cadmium | MR | No | Yes | — | 0.005 mg/L | — | Archived | Dec 31, 1985 | Inorganic Chemicals |
| Jan 1, 1982 | Dec 31, 1985 | Gross Alpha, Excl. Radon and U | MR | No | Yes | — | 15 pCi/L | — | Archived | Dec 31, 1985 | 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.