Preload is the world’s leader in wire-wound prestressed concrete tank design and construction. Since the 1930s, 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 dimensions and sizes, with architecturally styled treatment that complements 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 return on investment.