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Find Septic system installers and replacers in Knoxville

Avatar for HC Landscaping and Septic
HC Landscaping and Septic
5.0(
14
)

Serving Knoxville, TN and surrounding areas

Angi Approved

Super Service Award Winner

In business since 2020

Free estimates

Emergency services offered

"They are the best when it comes to fixing the septic tank and replacing the pump. They are top notch. They kept me updated all the way through the process. Communication is excellent on Time services. Five stars. They are there ahead of schedule, a very professional, very polite understanding and very affordable. you can’t go wrong if you hire these people, you are hiring the best in the business and very affordable and very professional and they go above and beyond on everything. John McCavour I just had work done today. Replace my pump in my set the tank top notch. They know they know what they’re doing and you have peace of mind when they’re done with the job."
Rough grade
Adding Drainage for Yard
Installing Septic Field
Line was busted
Fixed irrigation

+13

Response time1 day
Response rate98%
29 neighbors recently requested a quote
Avatar for Mr. Rooter Plumbing
Mr. Rooter Plumbing
4.5(
463
)

Serving Knoxville, TN and surrounding areas

Angi Approved

In business since 2008

Free estimates

Emergency services offered

"I had a tankless water heater installed but needed the gas line to be dug from the other side of the house for it to be connected. The job was complicated but Luke and his crew from Mr. Rooter did a great job! I would totally hire them again for any plumbing needs. "
Install New Drains
Install New Drains
Install New Drains
Install New Drains
Install New Drains

+49

17 neighbors recently requested a quote
Recommended by92%of homeowners
Avatar for Elliott & Son Excavating LLC
Elliott & Son Excavating LLC
5.0(
11
)

Serving Knoxville, TN and surrounding areas

Angi Approved

In business since 2022

Free estimates

Offers commercial services

"Elliott and Sons did a great job excavating my basement and prepping the yard for seeding. Would definitely use them again for any work needed. Always on time and never had to wonder what was going on as they kept me up to date on everything. Great company and top of line equipment too."
2” sewer line
Kiser Home
2” sewer line
Kiser Home
2” sewerline

+14

3 neighbors recently requested a quote
Recommended by54%of homeowners
FAQs for septic system installation and replacement projects in Knoxville, TN

The smallest standard septic system uses a 500-gallon tank, which costs between $875 and $1,150 installed. This size works well for single-occupant dwellings with minimal wastewater production. However, many local regulations specify minimum tank sizes, so check with your building department before committing to this compact option. Some jurisdictions require at least 750 gallons regardless of home size to ensure adequate waste processing capacity.

The installation timeline varies based on site conditions, permit processing, and contractor schedules. The process includes obtaining permits, conducting soil tests, excavation, tank placement, leach field construction, and final connections. Weather conditions, soil challenges, and inspection scheduling can all affect the overall timeline. It's wise to begin planning well in advance of when you need the system operational.

The most economical approach is to install a conventional anaerobic system with a plastic tank. To minimize costs while maintaining legality, obtain multiple quotes from licensed installers, consider scheduling during their slower seasons, and handle basic site preparation yourself. Never skip permits or required testing to save money—illegal installations can result in significant fines and mandatory removal, ultimately costing far more than doing it right initially.

Regular pumping helps prevent system failures and extends operational life. Most small systems require pumping every three to five years, though frequency depends on household size and usage patterns. Pumping services cost between $290 and $530, making this maintenance expense relatively minor compared to potential repair costs ranging from $500 to $2,600 for neglected systems. Establishing a regular maintenance schedule based on your installer's recommendations helps avoid costly emergency services.

The Knoxville, TN homeowners’ guide to septic system installations and replacements

From average costs to expert advice, get all the answers you need to get your job done.