On-site wastewater program

Columbia County regulates the installation, repair and maintenance of septic systems for homes and businesses not served by community sewer systems.

The Onsite Wastewater program is managed by the county's Public Health Department. 

Septic and onsite wastewater treatment systems must be designed, installed and maintained to protect:

  • the groundwater aquifer and surface waters from pathogen and nitrogen contamination
  • public health by properly treating and disposing of disease-causing human waste.

Our services include:

More information:

Contact: onsite@columbiacountyor.gov

Public Health Quick Links
General Information
Michael Paul
Phone Numbers
General Public Health Inquiries and 24-hour Emergency Contact: 503-397-7247
Fax: 888-204-8568
Emergencies: Dial 911
230 Strand St.
Columbia County Courthouse Annex
St. Helens,

Monday - Friday
8:30 a.m. to 5:00