Cities and towns (requirements may differ)
Summary of Specific Requirements For Gravity Systems
for Single Family Dwellings*
The following is in addition to the items listed on the FAQ page for Gravity System Requirements.
1 Soil Mantel test+3 Percolation test (5 to 60 min. per inch) required for new systems.
Perc. Rate (min./in.) Minimum Useable Disposal Area (sq. ft.)
Maximum Slope: 30%
Vertical Separation: 5' from trench bottom to ground water or
Septic tank capacity: 1000 gal. for 1-3 bedrooms
1500 gal. for 4-6 bedrooms
150 gal. for additional bedrooms
Yuba County Setback Requirements
For a graphical representation of
Yuba County setback requirements:
Links to Yuba County Website
For County home page:
For County's Rules for
On-Site Sewage Disposal:
*The information on this page is a summary for quick reference only and may not represent the latest standards. For complete and up-to-date information, see each counties official website.