Cal. Health & Safety Code § 106877
(a) The state board may suspend, revoke, or refuse to grant or renew any water treatment operator certificate to operate a water treatment plant or may place on probation or reprimand the certificate holder upon any reasonable grounds, including, but not limited to, any of the following:
(b) The state board may suspend, revoke, or refuse to grant or renew any water distribution operator certificate to operate a water distribution system or may place on probation or reprimand the certificate holder upon any reasonable grounds, including, but not limited to, any of the following: