That doesn't sound right at all. For one, I never rented anywhere in Pittsburgh where the tenant was responsible for paying water and sewer. And two, when I bought my house, it absolutely did not take 4-6 weeks to put the bill in my name. It takes like, a day, unless something has drastically changed. Rental utilities are specifically set up so they're easy to switch back and forth between tenants and landlords and back to new tenants, it shouldn't be complicated at all. And I don't think you should ever be using your landlord's account number directly.