American Water Works (AWK) announced that its unit, Pennsylvania American Water, will invest $28.3 million to rehabilitate 10 of its water storage tanks and construct four new tanks. Pennsylvania American Water’s tank rehabilitation program of inspecting, sandblasting and repainting tanks extends the tanks’ service lives and helps to protect water quality.Proper maintenance of the old water storage tanks and the addition of new tanks allow the company to meet rising demand from its residential and commercia ...