What is the minimum capacity of a septic tank for a dwelling with over five bedrooms?

The minimum capacity of a septic tank for a dwelling with over five bedrooms is established to ensure that the tank can handle the increased wastewater generated by additional occupants. The standard is set to start at a base capacity of 1500 gallons, which is sufficient for a certain number of bedrooms. For each bedroom beyond the initial five, there is an added requirement for additional capacity to accommodate the increased biological and water waste associated with more residents.

In the context provided, the provision of an additional 250 gallons for each extra bedroom beyond five aligns with standard practices in plumbing codes. This ensures that the septic system can properly process wastewater without risking overflow or mechanical failure. Such specifications help maintain health and safety standards in residential waste management systems.

The other options vary in the additional gallon amounts provided for each additional bedroom, but they do not meet the accepted guidelines for septic tank capacity as dictated by plumbing codes, which focus on balancing system efficiency and environmental safety.