Which term refers to the rate in minutes per inch that water drains through a soil during the least favorable climatic conditions?

The term that refers to the rate at which water drains through the soil during the least favorable climatic conditions is known as the soil absorption rate. This value is crucial in the design and implementation of septic systems, as it helps determine how well the soil can absorb effluent from the septic tank.

When assessing a site for a septic system, understanding the soil absorption rate allows installers to evaluate if the soil has adequate permeability for proper drainage and treatment of wastewater. Testing for this rate typically involves measuring how quickly water infiltrates the soil under conditions such as heavy rainfall or saturated ground, as these represent the least favorable scenarios for effluent dispersal.

By accurately determining the soil absorption rate, system designers can ensure that the septic system will function effectively, safeguarding both public health and the environment.