Wastewater utility rates and charges may be billed to the tenant occupying the property served, unless otherwise requested in writing by the owner. However, such billings shall not relieve the owner from liability if payment is not made by the tenants. The property owner has the right to examine the collection records to determine whether the charges have been paid by the tenants, but the examination must be made at the office in which the records are kept and must be during regular business hours.