TREATMENT OF POLLUTANTS (Cont)
STANDARD: Septic systems are most popular in rural and suburban areas and must be located in soils that meet standards for percolation or the ability to drain away water. standards require a maximum percolation rate of one inch of water in 60 minutes. A slow percolation rate allows soil bacteria to break down wastes as they move into soil layers.
CONCERN: Septic systems are generally a greater source of concern for groundwater pollution than for surface water pollution. However, septic systems are a real concern for surface water pollution when they are located near lakes, rivers, and streams. Of particular concern are lakes with high concentrations of tourist homes.
Note: 1 Cube Inch is equal 16.34 cm3, Multiple inch by 2.54 to get Centimetre