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

Steven Vincent Greso has over 35 years experience in septic systems design, installation as well as system monitoring and pumping.

We provide emergency service and can diagnose all septic alarms - contact us any time.

We do septic system certifications for real estate transactions including special point of sale inspections required by King County Health Dept. We have a properly licensed OSM maintainer who does our inspections...we are thourough but reasonable.

Systems designed, installed or monitored by us includes: gravity, pressure distribution, Mounds, sand filters, Glendon Biofilters, aerobic treatment units, Packed bed filters, Orenco Advantex AX20, subsurface drip, Eljen, and Bio Barrier.

Land use consulting and permitting.