Unfortunately, that low figure is fairly normal. Sad, too. This is thankless, nasty, hard, and sometimes demeaning work particularly at some of the cruddier run facilities.
I do know of some places, even in major cities, where the cost of living is high only offer the federal minumum wage.
Now, back in the day, agencies paid pretty good - anywhere from 9 USD to 14 USD per hour. However, with the economy and facilities needing to use less agencies, even the agencies pay little if the agency is even still sending CNAs out.
You may need to eventually look into school for a better liscense/ degree to get into a livable wage unless you have two incomes or live with no or absurdly cheap rent.