She said some paperwork had been pushed back (moving from a county to a city housing voucher program) She hasn't paid any Oct rent and the water got shut off.

In my vast experience with SEC8, I am confident in saying that the vast majority of voucher holders are from protected classes.

are they on voucher?

Depending on your area, you can at times see a large increase in rent revenue by leasing units to voucher (section 8) tenants.

The right section 8 voucher holders will adhere to your rules, or risk losing their voucher.

Add to this the uniquely corrupt bureaucratic environment of Baltimore City, Maryland (where I grew up)--and its creaky, barely functioning housing-voucher machinery. 

Some properties are purpose-built for income restricted residents which could include everything from voucher tenants to folks paying the freight themselves but meeting specific household income limits. 

Just go on the Housing Authority website and search for the Housing Choice Voucher Program.  

If they are charged they can lose their voucher.  

It's a guaranteed rent payment on the 1st of every month from the housing authority assuming their voucher covers 100% of the rent and usually get just slightly above market rent for each unit.If you have any questions feel free to shoot me a message.