On-Site Treatment & Disposal

(Septic Systems)

Proper wastewater treatment is critical for protecting water quality, public health, and culturally important landscapes. If you are installing or upgrading an On-Site Septic System (OSS) on tribal lands, your system must be reviewed to ensure it meets Tribal standards and does not harm groundwater or nearby waterways.

Step-by-Step Guidance

• CCT On-Site Septic System (OSS) Application Process
  Step-by-step guide to submitting your septic system application

• The Role of Soil in OSS & Site Evaluation
  Learn how soil conditions affect septic system design and treatment effectiveness

Certified Septic Professionals

Ferry County (2019–2020):

• Certified Septic Pumpers

• Certified Septic Installers

Okanogan County (2019):

• Licensed O&M Providers and Pumpers

• Licensed Installers

Further Reading

• "A Toilet, but No Proper Plumbing" – New York Times Article
  A national article examining gaps in wastewater infrastructure across rural and tribal areas.