California Code, Penal Code - PEN § 4000

1. For the detention of persons committed in order to secure their attendance as witnesses in criminal cases;

2. For the detention of persons charged with crime and committed for trial;

3. For the confinement of persons committed for contempt, or upon civil process, or by other authority of law;

4. For the confinement of persons sentenced to imprisonment therein upon a conviction for crime.

5. For the confinement of persons pursuant to subdivision (b) of Section 3454 for a violation of the terms and conditions of their postrelease community supervision.