Septic Information from the Chester County Health Department
The wastes from your home move through a pipe out of your house to a common sewer line which ultimately is treated at a municipal sewage treatment plant. In most cases, the treated waste is then discharged into a nearby creek or river. In Chester County, less than 40% of the residents are served by such public sewerage facilities.
The other 60% are served by on-lot sewage systems. On-lot sewage systems are composed of two primary parts: (1) septic tanks or an aerobic tank, and (2) an absorption area. The septic tanks remove the settleable and floatable solids from the wastewater. The aerobic tank acting in place of the septic tanks utilizes air pumped into the tank in addition to the settling action of the septic tank. The absorption area then utilizes the ability of the soil to filter and treat the remaining effluent before it reaches the water table. By removing the solids, the septic tanks and the aerobic tank protect the absorption area from becoming clogged. Proper maintenance of the septic tanks or the
aerobic tank will prevent more costly problems with the absorption area.
Download complete Septic Guidelines here
Montgomery County Septic Information can be found here