Adopted Codes and Regulations for Septic Systems Septic ("OWTS") regulations and guidelines On-Site Wastewater Treatment Services (OWTS) regulation (revision effective 6-26-2026, PDF) On-Site Wastewater Treatment Services - Regulation Revision - Effective 07-29-24 (PDF) On-Site Wastewater Treatment Services - Setbacks, Revised 07-07-2019 (PDF) On-Site Wastewater Treatment Services - Connecting a Building Addition to Your Current System , Revised 07-07-2019 (PDF)
