Under National Pollutant Discharge Elimination System permit number SD-0030996, the Standing Rock Rural Water System is authorized to discharge from its wastewater treatment facility in Corson County, South Dakota, to an unnamed tributary to Fisher Creek, a tributary to Oahe Reservoir on the Missouri River.
- SD-0030996 Standing Rock Rural Water System Final NPDES Permit (PDF)(17 pp, 733 K, December 14, 2017)
- SD-0030996 Standing Rock Rural Water System Statement of Basis (PDF)(14 pp, 1 MB, December 14, 2017)