Government Code § 54987

(a) This chapter shall not be construed as granting any additional authority to levy any fee or charge which is not otherwise authorized by another provision of law nor shall its provisions be construed as granting authority to levy a new fee or charge when other provisions of law specifically prohibit the levy of a fee or charge.

(b) This chapter shall not be construed as requiring counties, county service areas, or county waterworks districts governed by a county board of supervisors to review or revise any fee or charge which is in effect January 1, 1984.