Salisbury is making a change to its Salisbury-Rowan Utilities’ bill payment system that affects 1 percent of its customers. As the city moves towards reducing its carbon footprint and operating more efficiently, six utility-bill drop box locations in Rowan County – Salisbury (2), China Grove, Rockwell, Granite Quarry and Spencer -- will be removed on Friday, April 1. Some customers already have been alerted to the upcoming transition.