Septic

Are you a septic pro who works in Pierce County?

Access helpful policies, regulations, guidelines and resources. Learn how to become a Certified Professional in Pierce County. 

Read the latest updates, news and events for onsite sewage and well permitting. Sign up to receive industry notices by email.

Certification info, application and reporting requirements

Certified professional instructions:

• New and renewing.

Designer and Professional Engineer:

• Application
• Change of designer.

 Operation and Maintenance (O&M):

• Certification process.
• Firm application.
• Firm application (with trucks).
• Technician and specialist application.
• Specialty Hauler Application.
• Oil and Grease (O&G) haulers certification requirements.

Installer:

• Certification process.
• Firm application.
• Installer application.

Report OSS inspections and pumpings:

• Online RME.
• Online RME Reporting User Guide: Updated March 2025.

Regulations and procedures

Find on-site sewage and individual well codes and regulations on our Regulations and Procedures page. 

Continuing education opportunities and presentations

• O&M workshop presentations (2025, 2024).
• Industry notices.
• Washington On-Site Sewage Association (WOSSA).

Resources

• Applications.
• 2026 Fee Schedule—On-site sewage, well and water resources fee schedule.
• On-site sewage and well permitting staff assignment areas map.
• On-site sewage and well application regional areas.
• Methamphetamine contaminated properties list.
• Online RME fees letter.
• OSS deficiency letter.
• Surfacing sewage letter.
• File a complaint about a Pierce County septic service company or individual.
• Request a stub-out or final inspection. You may also call (253) 649-1422.
• Pre-Application Screening (Report is required for critical area sign off from Pierce County). 

Questions?

You can email us or call (253) 649-1925.