Wastewater filter units for domestic and commercial use in connection with septic tanks, wastewater systems, and effluent discharge systems; fibrous filtering media for use in connection with septic tanks, wastewater systems, and effluent discharge systems; water filters for use in the treatment of wastewater; water filters for use in the treatment of non-potable water; fibrous filtering media for use in the treatment of wastewater; fibrous filtering media for use in the treatment of non-pota...