How Do You Build a Small Septic System

If you’re looking to install a septic system, the smallest tank size you’re likely to find is 750-gallon, which will accommodate one to two bedrooms. You can also opt for a 1,000-gallon system, which will handle two to four bedrooms.

What is the smallest septic system you can buy?

If you’re looking to install a septic system, the smallest tank size you’re likely to find is 750-gallon, which will accommodate one to two bedrooms. You can also opt for a 1,000-gallon system, which will handle two to four bedrooms.

How much does the smallest septic tank cost?

Tank Gallon SizeHouse SizeTank Cost1,5006 – 7 bedrooms or small duplex$1,500 – $2,5002,000Duplex to small apartment building (~14 occupants)$3,000 – $4,0003,000Small apartment building$4,500 – $6,0005,000+Apartment building or community tank$7,500 – $14,000