True or False: Two single-compartment septic tanks in series are allowed.

The concept of using two single-compartment septic tanks in series can be permitted under certain regulations and conditions. When septic tanks are arranged in series, it allows for better treatment of wastewater by providing an additional stage for settling and anaerobic digestion. This can enhance the overall efficiency of the system by extending retention time, reducing the effluent's load on subsequent treatment steps, and ultimately improving the quality of the effluent discharged.

In many regulatory frameworks, this practice is accepted as part of a septic system design, provided that it meets certain guidelines and local codes. These guidelines may address factors such as tank size, spacing, and the type of effluent being treated. Therefore, stating that two single-compartment septic tanks in series are allowed aligns with standard practices in various jurisdictions where additional treatment capacity is beneficial.

In contrast, other choices may suggest that this practice is not acceptable or only allowed under special circumstances, but those interpretations do not reflect the general acceptance of dual-tank systems in proper contexts.