SEAWALL DOCTORS repairs leaks in manholes, tunnels, storm sewers, pipe joints, and water treatment tanks using cutting-edge acrylate resins and chemical grouts. We offer a permanent solution to repair seeping and gushing leaks as well as to fill voids caused by erosion and settlement. Leaking manholes and infiltration are a huge expense to municipalities due to the additional water treatment and operation costs. Depending on the situation, cost recovery can be reached in weeks. Several products we use have been verfied to meet NSF/ANSI 61 standards for contact with potable water.