We are proud to serve all north-west of Arkansas and northeast of Oklahoma proudly, including, including, among others: Rogers, Springdale, Bentonville, Silam Springs and Fayetteville, Ar. Allied Plumbing & Drain Service is a local and operated real estate company that provides all plumbing services northwest of Arkansas and northeast of Oklahoma. Integrity is what we are in part, with more than 30 years in the company.