The Dierolf Supply Company was established in 2008. With service areas covering Gilbertsville, Pottstown, Allentown, Quakertown, Harleysville and other surrounding areas of Montgomery, Chester, Lehigh and Berks Counties, Dierolf Supply Company is the premier water treatment company to contact if you need a Water Softener, Water Conditioner or Drinking Water system to treat your homes water supply. Whether your house is fed by Well Water or City Water, Dierolf Supply Company has the right water treatment or water filtration system to help keep the water that you and your family rely on safe for drinking, cooking and bathing. Call us today for a water analysis that will evaluate your home’s water condition and help us determine the best water treatment solution for you.