Notwithstanding any other provision of law, for the 2004-05 and 2005-06 fiscal years, a county shall not impose a fee, charge, or other levy on a city, nor reduce a city's allocation of ad valorem property tax revenue, in reimbursement for the services performed by the county under Sections 97.68 and 97.70. For the 2006-07 fiscal year and each fiscal year thereafter, a county may impose a fee, charge, or other levy on a city for these services, but the fee, charge, or other levy shall not exceed the actual cost of providing these services.
Ca. Rev. and Tax. Code § 97.75