Preload is the world’s leader in wire-wound prestressed concrete tank design and construction. Since 1930, Preload’s tanks have met the water storage and wastewater treatment needs of thousands of communities and businesses. Our tanks are offered in a wide variety of custom shapes and sizes. Our architecturally treated styles complement any environment. Built to the AWWA D110 Standard and ACI 372, Preload tanks require no routine maintenance, thereby providing a long service life and superior ROI.