SV Greso Inc. - serving the Pacific Northwest since 1986.

Steven Vincent Greso has over 33 years experience in septic systems design, installation as well as system monitoring and pumping.

Systems S.V. Greso, Inc. has designed and installed: Gravity (with & w/o pump);  Pressure Distribution;  Mound systems;  Sand Filters (stratified, intermittent);  Recirculating gravel filters;  Packed Bed Filter (AX20);  Glendon Biofilter;  White Water DF series Aerobic Treatment Units;  Nibbler units (with cooperation from Aqua test);  Subsurface Drip Systems with and w/o pre-treatment;  Eljen System with pressure distribution.