Sewage Disposal

March 25 ,2020

In light of the CDC recommendations to maintain appropriate social distancing, please utilize our online application system, idtPlans, or call our office at (615) 790-5751 for all applications, permits, and questions that can be handled without face to face interaction. If it is necessary to speak to someone in person, please consider calling the office and scheduling an appointment with the appropriate personnel. Your cooperation is greatly appreciated while we try to maintain a healthy environment for all visitors and staff.

March 20, 2020


The health of Williamson County citizens is a primary concern of Williamson County Government.  In accordance with the recommendation from the CDC to help prevent the spread of the COVID-19 virus, notice is hereby given that until further notice, the Community Development Department will no longer hold in-house pre-application meetings in our offices.  Please contact the Planning Department at 615-790-5725 or
 in order to set-up a pre-application meeting by remote means.


The Department of Sewage Disposal Management is charged with the task of ensuring that the laws of Williamson County regarding the use and placement of individual, onsite septic tank / sewage disposal systems (septic systems), are fairly implemented and enforced so as to protect:
  • The health and well-being of the general public.
  • The irreplaceable groundwater resources of the county.
  • The quality of the environment which the citizens of the county enjoy.

Flooded Water Well Notice

Find out what to do with a water well after a flood.

Emergency Relief Measures

If you are experiencing a septic system backup into the internal plumbing fixtures of a structure, please view information for emergency relief measures available during periods when the office is closed.