Central Massachusetts PHCP wholesale distributor R&R Plumbing Supply Corp. commemorates 100 years of service to contractors, commercial accounts and retail markets that surround Worcester, Mass. Samuel Ritz started the company in 1905 as an installation plumbing contractor. The company grew into wholesale distribution under Henry Ritz, who took over in 1937. R&R was one of the first distributors to build a street-level, glass-front showroom. The company is now owned by the third generation, President Jesse Ritz.