Job offer, pay seems very low?

I understand pay varies state by state but I’ve owned a cleaning company for 7 years and just recently decided to get out of it to potentially search traditional employment.

I applied for a state job working a local college for the Custodial Supervisor III position, the position required 3 years of supervisor experience, a preferred bachelors and a few other things.

Duties: Overseeing cleaning of the entire campus Managing all cleaning complaints Ordering all cleaning supplies Potential 50 hour weeks And management of 10 workers

The pay? 18.25 a hour… I’m confused maybe I’m just getting back into the “real world” in terms of working a traditional job but this seems insanely low, considering it’s a state job. The benefits are of no benefits to me as I already have all the benefits their offering.

Is this to low?