Septic Tank Size Calculator
Use our easy-to-use Septic Tank Size Calculator to determine the ideal tank capacity for your septic project.
Calculate by Number of Bedrooms
Estimated tank size needed: gallons (view options)
Disclaimer: This calculation is an estimate, please consult with your local designer/installer or local county for accurate tank size in your area.
**We are assuming an average of 2 people per bedroom, with an average wastewater generation of 75 gallons per person.
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