Riordan Materials, a DXP Company

We are a leading supplier of water, wastewater and stormwater treatment equipment solutions. Our commitment to the water and wastewater industry emerges in our strong history and superior level of service throughout Pennsylvania, Southern NJ, Delaware, Maryland and the Washington D.C. area. The experience of our staff (licensed professional engineers, post graduate engineering degrees, certified operators) lends itself to assisting and understanding not only the economics of projects but also the detailed technical issues involved. This level of assistance is not available with a typical technical sales company. We welcome the opportunity to work with you on any current or future projects. Call us today!