Wisconsin Septic System
In Wisconsin, septic systems are referred to as Subsurface Soil Absorption Systems. The Wisconsin Department of Natural Resources (WDNR) must issue a permit to anyone wishing to install a system in the state. Application for the permit requires submittal of information describing the design, site location relative to property boundaries, any existing wells. Information on soils, depth to groundwater and bedrock, and groundwater characteristics is also important. Homeowners are urged to employ technology capable of removing nitrogen to the extent that is technically and economically feasible.
Wisconsin Septic System in 30% of Households
There are over 700,000 septic systems in Wisconsin – serving approximately 30 percent of all households in the state. According to Wisconsin Natural Resources magazine, approximately nine percent of the nitrate reaching groundwater in Wisconsin comes from septic systems.