Installed at the outlets of septic tanks, effluent filters provide an economical way to trap suspended solids or particles reintroduced from scum or sludge layers before they discharge to drainfields. Clogged filters cause poor performance of the septic tank, but they create a problem far easier and less expensive to solve than restoring or replacing a soil absorption system.“A clogged filter is a good thing,” says Peter Gavin, president of Polylok Inc. in Wallingford, Conn. “Homeowners are protecting the most expensive portion of their on-site systems. What ultimately makes leachfields fail is solids plugging the pores of the soil, preventing
