About Us


Corporate Bio

Mar-Jen Wholesale Plumbing Supply was founded in 1994 by Randy Waid. Mar-Jen Supply began as a solo business venture that was named after his two beloved daughters; Marlena and Jenny. As President, Randy has built Mar-Jen Supply into a highly successful company of multiple employees. Our friendly dedicated staff in customer service, accounting, warehousing, and delivery, work very hard to provide great service and share their knowledge with the plumbing trade. The company was purchased 1n 2018 By Alan Izadi. Alan is taking the business to new heights.

Our Corporate offices and warehouse facilities are located in South El Monte California. Mar-Jen Supply started by specializing in pipe valve fittings. Today they offer a full catalog of high quality plumbing supplies, tools and assorted hardware. Mar-Jen Supply delivers to  Los Angeles, Orange, San Bernardino, and Riverside Counties. Over fifteen years of excellence in the wholesale plumbing supply industry provides Mar-Jen Supply with continued growth allowing them to provide high quality products at very competitive prices.