The Confederated Tribes of the Colville Reservation Environmental Trust mission is to achieve & maintain a healthy environment with functioning ecological systems including biodiversity, clean water, clean air and healthy soils required to support plants, animals, tribal values and subsistence uses.

On-site Treatment & Disposal

Education Sheet for the CCT On-Site Septic System (OSS) Application Process PDF

Education Sheet on the Role of Soil in (OSS) and the Site Evaluation PDF

The New York Times Article "A Toilet, but No Proper Plumbing" link