Lifetime self-cleaning greywater sieve filter never needs replaced

Every greywater system MUST have a settling basin with filter to prevent particulates from entering the leach field. Particulates combine over the years to form a black sludge layer in the bottom of your leach pit or field, called 'bio-mat'. Bio-mat clogs the soil, preventing percolation and eventually causing total failure. Choose a heavy-duty tank that is rated for 'dry burial', meaning it can be buried without water inside and not risk collapsing from weight of soil atop and around. Tanks as short as 42 inch tall are adequate for a greywater system. Generally, you need at least 24 inches from the base of the outlet pipe to the bottom of the settling tank. Installing filters too close to the bottom of the tank may not provide enough settling area to prevent solids from exiting the tank, especially under turbid conditions. Proper inlet plumbing, as detailed below, is critical to proper filter function.

Our time-tested NSF/ANSI certified standard #46 graywater filter assembly has a universal hub for use with either SDR35 thin-wall or Sch40 thick wall 4 inch diameter pipe. This lifetime service filter is self-cleaning in normal use, with a natural sloughing action to prevent bio-mat buildup. Features 80 lineal feet of filtration area for up to 800 gallons per day treatment volume. Built-in gas deflector on the bottom provides secondary 1/2 inch filtration to prevent larger solids from entering inside. A series of 1/16 inch horizontal filtration slots, rather than a mesh screen, provides much less surface area for solids like laundry lint to attach themselves. Patented flow pattern reduces trapping of solids inside by allowing sediment to slough-off and fall back into the tank for further digestion. Filter features a locking tab to prevent ‘floating’. Solids are not allowed to pass-by even when tank surges occasionally. This care-free graywater filter design never needs replacing. 

Always limit the amount of debris and sediment going down your drains by installing strainer baskets in every sink, tub and shower and only use liquid soaps. When your utility room sink is installed alongside the washing machine, you can attach a five gallon paint strainer bag to the washing machine effluent hose with a clamp, as pictured at right. Laundry lint (synthetic fibers, especially), hair, and sediment (dirt) does not decompose readily, eventually clogging any leach field by creating an impenetrable 'bio-mat', unless filtered out with a settling tank. Settling tanks remove and contain debris and fats, ensuring a much longer-lasting graywater irrigation or disposal system.