The Chief Executive's response is:Scottish Water is currently undertaking a review of tariff structures for all the services it provides to its customers. The review will seek to establish: the most appropriate tariff structures for all customers, including those with metered supplies;the most appropriate tariff structures for surface water drainage charges for all customers, including commercial customers supplied through a water meter, and a consistent approach to charging domestic, commercial and industrial customers for all services, whether metered or not, including surface water drainage charges.