To prevent sewage back-ups in the home, it is ideal to pump out septic tank sludge when it is 25% of the liquid depth.

All of the following are examples of items with low biodegradability that should not be flushed into a septic system EXCEPT:

Septic tanks that are greater than 1500 gallons must be divided into two compartments.

Effluent pump systems have water level controls which are typically maintained by a mercury float switch or similar device.

___ is a method of property description that is used in the older eastern states of the U.S.

When using plants over an absorption field you should consider all of the following EXCEPT:

Food service must install a ___ in plumbing prior to toilet wastes to collect grease.

The minimum quality standard for septic tank influent pipe is set by:

Standard 40 includes Standard 245 plus the limits of 10 NTU turbidity and 240 MPN of E. coli/100 mL.

Which of the following alternative septic systems DOES NOT recycle water to the environment by evaporation?