In California Do Tenants Get Interest On Security Deposit?

Yes you do get interest. Go to renters rights in the search. Starts same as a bank.
1990-91-92--4% 1993-2.90 94--2.50 95- 2.80 96-3.10 97- 2.80 98- 2.60 99- 2.30 2000-2.20
01--2.40 02-thur-08---1.50
It's your money drawing interest not theres. Figures I gave you came off off - landlord & tennant laws.

In California, do landlords pay interest on returned security deposits?

Yes if it is under a rent controlled lease which 90025 is. The housing authority has a list of the interest rates the landlord is lawfully required to pay you, it can go from under 1% to 5% depending on different circumstances which I do not know.

It is illegal for a landlord to deposit funds for security deposit and get interest.  No, Tenants do get them either

Yes they do get interest from time to time again.