Helpful answers
Septic System FAQs for Knoxville, TN
Clear answers about septic services, common system issues, project costs, and the Knoxville area communities we serve.
Helpful answers
Questions people ask
How often should a septic tank be pumped?
Most household septic tanks need pumping every three to five years. The right interval depends on tank size and how many people live in the home; a smaller tank or a full household may need service sooner.
What septic services do you offer?
Services include septic tank pumping, perc testing, new and replacement system installation, septic inspections, tank repair, and drain field replacement. The installation cost page also has a planning calculator.
What towns and counties do you serve?
Knox Septic Services serves Knoxville and communities across Knox, Sevier, Blount, Anderson, Loudon, Union, Grainger, and Jefferson counties. Check the service area list for named towns and confirm your address with the team.
Do you serve Sevierville and Seymour?
Yes. Sevierville and Seymour are both listed in the service area. Contact the team with your address to confirm coverage for your specific property.
What is a perc test, and when is one needed?
A perc test checks how quickly water moves through the soil. Its results help determine drain field sizing for a new or replacement septic system; local permit requirements and the site conditions determine the next steps.
How much does a new septic system cost in Knoxville?
For a three-bedroom house on Knox County clay, a conventional system typically runs $16,000 to $22,000. Home size, soil, site access and system type all move it, so the soil report and a look at your property set the exact price.
What happens during a septic system installation?
A project generally involves evaluating the soil, planning the system, obtaining the required permit, installing the tank and drain field, and arranging the required inspection. The exact process and schedule depend on the property and local authority.
What should I do if sewage backs up into the house?
Stop running water in the home and arrange a septic service visit. A backup may come from a full tank, a blocked line, or a failing system, so the cause needs to be checked before deciding on a repair.
What are signs that a drain field may be failing?
Persistent soggy ground, sewage odors, or wastewater surfacing near the field can point to a problem. Rain and other site conditions can also affect the area, so have the system assessed before concluding the field needs replacement.
When should I schedule a septic inspection?
An inspection is especially useful when buying or selling a home with a septic system. Ask what the inspection covers and what the written report includes, since scope depends on the system and the property.