Georgia Septic Installer Practice Test

What is the typical liquid capacity of a septic tank for single-family dwellings with two to four bedrooms?

1. 750 gallons

2. 1000 gallons

3. 1250 gallons

4. 1500 gallons

The correct answer is: 1000 gallons

The typical liquid capacity of a septic tank for single-family dwellings with two to four bedrooms is generally 1,000 gallons. This size is established based on the expected average daily sewage flow for a household of this size, ensuring that the tank can adequately hold the wastewater generated from daily activities such as bathing, cooking, and toilet use. This 1,000-gallon capacity allows for effective treatment of the sewage, providing a sufficient volume for solids to settle and for bacteria to break down waste. Proper sizing is crucial to prevent overflow and ensure the septic system functions effectively over time. It also helps mitigate issues such as groundwater contamination and system failure, which can arise from inadequate tank capacity.