From Consumer Wiki
Ear and body piercing, tattooing and permanent cosmetics application practitioners are required to register with their local County Health Department and comply with standards adopted by the California Department of Public Health.
Existing law makes it a misdemeanor to pierce, tattoo or apply permanent cosmetics to a person under the age of 18 years, unless accompanied by that person's parent or guardian or as directed by a notarized statement by that person's parent or guardian.
The Sacramento County Division of Public Health will investigate complaints of unsanitary conditions and will take culture samples if communicable diseases(hepatitis) can be traced to the ear/body piercing business in question. All other complaints are classified as civil issues under Small Claims Court.
Sacramento County Department of Health & Human Services
Division of Public Health
7001 A East Parkway, Suite 600
Sacramento, CA 95823
(916) 875-4069 Fax
Penal Code section 652