Incorporated Cities (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.
The county follows the Uniform Building Code, with the following exceptions:
Setback from the high water line of intermittent streams, wetlands and swales: 50 ft. minimum
Setback from the high water line of perennial streams, lakes, ponds, reservoirs, and other existing or potential potable water sources:
Outside of Community Areas: 150 ft. minimum
Within Community Areas: 100 ft. minimum
Links to Sierra 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.