PDAM Ungaran branch has a responsibility to provide hygienic water to the public. This company serves the best service to the customer to create a partnership for the long term. This final project aimed to know how PDAM’s sevices to the customers based on their complaints. This research used descriptive method. The object in this final project was PDAM Ungaran branch. Method of collecting data is deskriptiv method. The result showed that PDAM had implemented the best service to customers. Constraints in the implementation of this excellent service were the employees who are not disciplined and responsible in handling customer complaints. This constraints effect to the finished job when handling customers complaints, so make the customer unsatisfied with the services. The excellent service to the customer of PDAM Ungaran branch could be implemented optimally if employees were disciplined and responsible with their job in handling complaint of customers.