Your Septic System Specialist

Serving Nevada County
(530) 273-2964
P.O. Box 975
Grass Valley, CA 95945


Our Family of Companies

Your Neighborhood Plumber, serving Nevada County

Navo & Sons, Inc
Your Septic & Leachfield experts in Nevada County

All-Sierra Septic
Your Septic & Leachfield experts in Placer County



We are a family owned and operated company established in 1969. We pride ourselves in our reputation of honesty and quality of service. We have over 150 years combined experience for all your septic system questions, concerns, or needs. We are a family owned and operated business, now three generations strong.

It all started with George Navo in August 1969, with an old Chevy septic truck and some help from his family after school, work, and on weekends. Navo & Sons Inc. now has a fleet of septic trucks and plumbing vehicles for all your septic and plumbing needs


Our Services:

Navo & Sons Inc. is your one stop for all your plumbing needs, we attend multiple conventions yearly to offer the leading edge equipment and experience to our clients.

We have the California State Sanition Systems License C42 for all replacement / repairs to the entire septic tank, leach field for commercial and residential needs. Also as a full service plumbing company with a C36 Plumbing License we can meet all your plumbing needs.

We are family owned and operated business since 1969, with the experience and knowledge to fully understand the workings and of the entire septic system.

Perc and/or Mantles (soil analysis) for residential, commercial, and other contractors or engineers

Site evaluations for developed and undeveloped properties

Specializing in sewage disposal designs and/or installations for residential/commercial needs: Standard Sewage Disposal System / Steep Slope / Deep Trench Pump System / Hi-Line Design / Pressure Dose / Intermittent Sand Filter Systems/ Advantex Systems

Monitoring and Maintenance for your sewage disposal system

Radio transmitting and receiving equipment allows us to locate septic tanks, leach fields, and sewer lines all within an inch.

Video inspections of 3-inch to 4-inch sewer lines to evaluate exactly what is causing stoppages in problem lines, with our television camera equipment. (We can even tape the inspection for your review)

Using the Terralift system we can rejuvenate a failing septic system, by fracturing the soil and creating a network of fissures and cracks and injecting polystyrene pellets to open air and water passages to insure proper leaching of your septic system.

Trailer mounted high pressure water jetter to unstop 1 1/2-inch to 36-inch diameter culverts, sewer, and leach lines, using high pressure water blasting from 1,500 psi to 4,000 psi and with a 500-feet hose we can clear almost any stubborn clog.

With our leak location equipment locate where a water line is leaking to a depth of up to 10-feet, to save on any unnecessary digging.

We are fully insured with both liability and workers compensation insurance - all are available on request.

24 hour answering service for your convenience.

A full line of bacterial products and chemicals for all sewer line, septic tank, and leach field needs