Can I ask the group, what the renters pay in terms of utilities etc in the Bay Area, California.
If it’s like most places in America, whatever you and they agree to.
If you don’t have a separate meter for their unit you can agree on a specific amount for each utility.
If the government isn’t involved in the utility business (and hence can come after you for payment regardless fo who’s name the utilities are in.) it’s advised to get them in the tenants name before move In.
In apartments, the landlord usually covers utilities if they don't have separate meters. If they do, they would pass the costs to the tenants. Single family renters usually cover all the utilities themselves.
Sewage/garbage it may be in your best interest to pay personally. City ordinances/local laws can, "and or up to" lein for code violations. Work a payment arrangement or have it increased into rent.