Come visit Koval Building and Plumbing Supply, a family-owned business with a commitment to quality products and service. Established in 1963 by John Koval Sr, the company started in the small town of Granville and has since expanded to three locations: Granville, Morgantown, and Uniontown. Each store offers a wide range of plumbing, heating, kitchen, hot tub, and bath products from nationally recognized brands. You'll also find a team of experienced home improvement and backyard leisure specialists who are professional and dedicated to enhancing the function, aesthetic, and value of your home.