If the utilities are in my name as the landlord, can I have the utility service to a rental unit terminated if the tenant is delinquent in paying their rent?

No. Terminating the utility service to a rental unit is a method of self-help that is not permitted under Utah law and can actually subject you to liability to the tenant. In order to evict a tenant, even one who is delinquent in making their rental payments, you need to go through the eviction process, obtain a court order, and let a member of the sheriff or constable’s office enforce the court order.