Phone: 605.867.5236‍

Water Quality

Federally recognized tribal lands cover over 110,000 square miles of the United States. Unlike a single state these lands are held by more than 566 distinct Indian tribes, each with a unique set of water resources used for recreation, transportation, fishing, aquaculture, drinking water, ceremonial purposes, and more. Each tribe faces a unique set of challenges in protecting these resources. Together, Indian tribes are responsible for protecting and restoring tens of thousands of square miles of rivers, streams, and lakes, as well as ground water.

The EPA provides funds to the Oglala Sioux Tribe to protect water quality under two unique programs:

EPA’s tribal Section 106 program

Since 1987, EPA has provided technical assistance and funding under the Section 106 program to assist tribes and intertribal consortia to understand, assess, and preserve water resources on their lands. For tribes, Section 106 grants are a crucial, dedicated source of funds for developing, maintaining, and expanding water quality programs. These programs are designed to control, prevent, and eliminate water pollution as well as to educate tribal members and the general public.

Nonpoint Source Pollution (Section 319) program

Nonpoint source (NPS) pollution, unlike pollution from industrial and sewage treatment plants, comes from many diffuse sources. NPS pollution is caused by rainfall or snowmelt moving over and through the ground. As the runoff moves, it picks up and carries away natural and human-made pollutants, finally depositing them into lakes, rivers, wetlands, coastal waters and ground waters.


Let us know about possibly contaminated sites!

If you have seen an illegal dumpsite or other possible signs of contamination, please contact OST Brownfields Program in the OSTEPP office at (605) 867-5236 or by email at


Go to "Report Illegal Dumping!" page to Report →

Contact Info

Oglala Sioux Tribe Environmental Protection Program

PO BOX 2008 PINE RIDGE, SD 57770

Phone: 605-867-5236
Fax: 605-867-1845

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Report Illegal Dumping

Report illegal dumping, dumpsites or other possible signs of contamination, please contact us at (605) 867-5236 or by email at or Go to Report Illegal Dumping! page to Report.