Find Your Perfect Septic Tank Size
Don't guess when it comes to your home's wastewater management. Use our precision calculator to determine the recommended tank capacity based on your property's specifications.
Base recommendation for a 3-bedroom home.Always verify with your local health department as codes vary by county.
Why Sizing Matters
A properly sized septic tank is crucial for effective wastewater treatment. If a tank is too small, solids won't settle correctly, leading to clogged drainfields and costly backups.
The Golden Rule: Most regulations require a minimum capacity based on the number of bedrooms, not just the current number of occupants. This ensures the system handles peak potential loads.
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Sizing is just the first step. Our advanced sonar inspections detect issues 24 months before they become emergencies.
Find an InspectorCommon Septic Sizing Questions
How do I determine the size of my septic tank?
The most accurate way is to check your property's "as-built" drawings or installation permit. However, our septic tank size calculator provides a reliable estimate based on bedroom count, which is the primary factor used by health departments. For example, a 3-bedroom house typically requires a 1,000-gallon tank.
What size septic tank for a 4-bedroom house?
For a 4-bedroom home, the standard recommendation is a 1,250-gallon septic tank. This capacity accounts for the potential wastewater output of 6-8 occupants (150 gallons per day per bedroom is the common sizing formula).
Does a garbage disposal affect septic tank size?
Yes. Garbage disposals increase the biological load (solids and grease) entering your system. Many experts and local codes recommend increasing your tank size by 20-50% or inspecting/pumping your tank more frequently if you use a disposal.
Expert Septic Audits & Inspections
Knowing your tank size is just the beginning. Routine inspections using advanced sonar technology can verify the actual condition of your tank, baffles, and drainfield.
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