Learn About Septic-Onsite Wastewater

The Onsite Wastewater Program is responsible for all permitting and inspecting activities that require a septic tank system for wastewater disposal while offering technical assistance to those designing septic and wastewater systems. 

What is a septic system?

A "septic system" is a subsurface wastewater system consisting of a settling tank and a subsurface disposal field. Septic systems are used when sewage treatment plants are not accessible. They safely treat and dispose of wastewater produced in the bathroom, kitchen and laundry. Wastewater may contain disease-causing germs and pollutants that must be treated to protect human health and the environment. 

Please click on the links below for information on:

What type of Residential Permit do I need?

Click HERE to answer a few questions to determine which residential permit is needed.

Wastewater Permit Application Process Updates

Customers seeking a wastewater permit can now submit a building permit application prior to defining the final building footprint by incorporating a Building Envelope on the preliminary site plan associated with the building permit application. Builders are encouraged to identify a Building Envelope large enough to cover multiple potential building plans (including deck, stairs, etc.). To learn more about the updated wastewater permit process and permit options available to customers, please see the links below:

  • Wastewater Permit Application Fact Sheet
  • Wastewater Process Update and Permitting Option Presentation