Residential & Commercial Plumber in Amarillo Serving The Panhandle. Hiring a top quality plumber to do the job right the first time is something you can count on with Amarillo’s Co Plumbing, one of the top rated plumbers in Amarillo. With 22 years experience Amarillo’s Finest Plumbing has been a reliable source for all of your plumbing needs in Amarillo. Whether it’s new residential construction plumbing or commercial plumbing in Amarillo, we have the tools and professional staff to get the job done right.