The goal of distribution is to spread wastewater and effluent over space and time to allow physical, biological and chemical treatment processes to effectively remove contaminants. Installer activities can greatly impact how closely gravity systems come to achieving ideal treatment. Since the movement within the trenches is governed by gravity, the main factor of installation that maximizes use of the entire trench bottom is keeping it level across the trench width and along the trench length.
InstallationDistribution boxes and drop boxes must be properly bedded to remain stable over time. The proper bedding is a thin layer of washed rock or
