When can I start billing back the water and sewer bills

[Gulliver R.]

Okay so I'm about to close on a property with 36 tenants. My plan is after closing I'm going to install water sub-meters so I can bill back the water and sewer bills to the tenants. I will send out an Addendum (with some new terms) and a 30-day notice 30 days before implimenting all the changes. Currently there some tenants in the middle of their 12-month lease and the current owner put them on auto-renewing leases. I know that I can start billing back the w/s bills to the month-to-month tenants after 30 days. But I'll have to wait for the other tenants that are still in the middle of their 12-month lease to expire first before I can start to bill them back the w/s.

So my question is: 

Can I still bill back the water and sewer bills to the tenants that just had their 12-month leases expire even if they're on auto-renewing leases? In other words if today is the last day of John Anderson's lease, then tomorrow the lease will auto-renew for another 12 months - can I start billing back the w/s to him? The auto-renewing component of the lease shouldn't prevent me from billing him back the w/s bills, right?