Section 4013 Of Chapter 1. County Jails From California Penal Code >> Title 4. >> Part 3. >> Chapter 1.

. (a) A sheriff or jailer upon whom a paper in a judicial proceeding, directed to a prisoner in his or her custody, is served, shall forthwith deliver it to the prisoner, with a note thereon of the time of its service. For a neglect to do so, he or she is liable to the prisoner for all damages occasioned thereby.
  (b) Service directed to a person who is incarcerated within any institution in this state may be served by any person who may lawfully serve process.