A line of cooling towers constructed of anti-microbial resin, which is fully compounded into the base cooling-tower material, has been released. Both the fill and structural casing are composed of anti-microbial high-density polyethylene material, which contains additives that operate on a cellular level to continuously disrupt and prevent uncontrolled growth of microorganisms and biofilm within the cooling tower. The design features a sloped basin and/or basin sweeper system to avoid stagnant water areas.