This article shall not apply to any city, town, county, sanitary district, sanitation district, sewer maintenance district or to any agency or institution of the state or the federal government by reason of the cleaning of septic tanks, chemical toilets, cesspools, sewage seepage pits or sewage works that are owned and operated by any of these governmental agencies or institutions.
Source:
Section 117400, https://leginfo.legislature.ca.gov/faces/codes_displaySection.xhtml?lawCode=HSC§ionNum=117400..