Casoria is an Italian town of 77,357 inhabitants in the province of Naples, in the Campania region. It is part of the coastal hills of Naples, and located in the middle of ancient reclaimed swamps.
The aqueduct that brings water to the city was inaugurated in 1885 and has been managed for more than 20 years by ARIN, the client who commissioned the Culligan water treatment plant. The application of a specific treatment system was required by the company to reduce pollutants in water. In 2010, after three years of work, the treatment plant developed by Culligan was inaugurated. The plant’s purpose was to bring manganese values below 10 ppb and of Trichloroethylene and Tetrachloroethylene below 5 ppb.
In the last twenty years, groundwater used as drinking water showed growing levels of pollutants, due to increase in consumption (lowering of groundwater levels) and the presence of anthropogenic pollution, resulting from human activity.
Until 2009, drinking water supplied locally presented values of manganese, Tricloretillene and Tetrachlorethylene above the legal limit (50 ppb of manganese and 10 ppb Tri +Tetrachloroethylene), levels that prevented water distribution to local utilities.
The turnkey solution developed by Culligan, namely, from preliminary design to testing, consists of a pressurized filtration system that relies on two-stage filtration: the first uses catalytic material for the removal of manganese, with previous disinfection with sodium hypochlorite, and subsequent filtration through granular activated carbon for the adsorption and removal of Tri and Tetrachlorethylene.