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Northeast Tri County Health District, WA
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  3. Septic
  4. Guidelines, Standards, Rules & Regulations

Guidelines, Standards, Rules & Regulations

Guidelines & Standards

  • Alternating Drainfields (PDF)
  • Application Guide for Granting Waivers from Sewage System Regulations (PDF)
  • Curtain Drain Design Guidelines (PDF)
  • Design Guideline for Gravity Systems in Soil Type 1 (PDF)
    • Appropriate Precipitation Data for Evaluating Gravity in Type 1 Soils (PDF)
  • Dosing Gravity (PDF)
  • Gravelless Distribution Products (PDF)
  • Gravity Flow On-Site Sewage (PDF)
  • Holding Tank (PDF)
  • Intermittent Sand Filter (PDF)
  • Mound Systems (PDF)
  • Pressure Distribution Systems (PDF)
  • Proprietary On-Site Wastewater Treatment Products (PDF)
  • Recirculating Gravel Filter (PDF)
  • Sand Lined Trench (PDF)
  • Stratified Sand Filter Treatment Systems (PDF)
  • Subsurface Drip System (PDF)
  • Water Conserving On-Site Wastewater Treatment Systems (PDF)

Rules and Regulations

  • Regulations 01-2007 On-Site Sewage Disposal Systems - With February 3, 2010 Amendment (PDF)
  1. Applications, Forms & Resources
  2. As-Built Records
  3. Guidelines, Standards, Rules & Regulations
  4. Septic & Wastewater
  5. Septic Contractors
    1. Installer Test Instructions
  6. Septic Maintenance
  7. Septic Permit Applications
  8. Land Development
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Data & Reports

  1. Footer Northeast Tri County Health District Preserve - Promote - Prevent

Contact Us

  1. 240 E Dominion Ave

    Colville, WA 99114

    Phone: 509-684-2262

    Fax: 509-684-1002



Ferry County

  1. 147 N Clark Suite 1

    PO Box 584

    Republic, WA 99166

    Phone: 509-775-3111



Pend Oreille County

  1. 605 Highway 20

    Newport, WA 99156

    Phone: 509-447-3131



Quick Links

  1. Drinking Water Program
  2. Food & Beverage Worker Cards
  3. Local Farmers Market
  4. On-Site Sewage Treatment and Disposal
  5. Restaurant Inspection Records
  6. Teen Link
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