Apparatus comprising a system for performing an industrial process and a system for providing high microbiological quality cooling water to said system for performing an industrial process, where the system for performing an industriel process comprises an industrial plant, the apparatus comprising: - a container for storing cooling water, the container comprising a bottom for receiving settled particles and where the container is an artificial large body of water comprising a surface area in range from 50 to 30,000 m2 per MW of cooling required by the industrial process and a volume of at least 10,000 m 3; - a feeding line of inlet water to the container; - a coordination means for timely activating processes necessary to adjust water quality parameters of the cooling water within predetermined limits, wherein the coordination means comprises electronic devices and is capable of receiving information, processing that information, and activating other processes; - a chemical application means activated by the coordination means; - a mobile suction means for moving along the bottom of the container and suctioning cooling water containing settled particles; - a propelling means for moving the mobile suction means along the bottom of the container; - a filtration means for filtering the cooling water containing settled particles; - a collecting line coupled between the mobile suction means and the filtration means; - a return line from the filtration means to the container; - a heat exchanger inlet line from the container to the heat exchanger of the system for performing the industrial process for providing the high microbiological quality cooling water to the heat exchanger; and - a return water line from the heat exchanger to the container; wherein the coordination means is configured to: a. activate the chemical application means and provide information about the dosage and addition of suitable chemicals to maintain the controlled water quality parameters within their respective limits; and b. activate the mobile suction means and, simultaneously, the filtration means for filtering water suctioned by the mobile suction means, to filter only a small fraction of the container water, wherein the coordination means is configured so that the chemicals are applied only when they are needed, and so that the filtration means and mobile suction means operate only as needed to maintain the parameters of the water within their limits. - a container for storing cooling water, the container comprising a bottom for receiving settled particles and where the container is an artificial large body of water comprising a surface area in range from 50 to 30,000 m2 per MW of cooling required by the industrial process and a volume of at least 10,000 m 3; - a feeding line of inlet water to the container; - a coordination means for timely activating processes necessary to adjust water quality parameters of the cooling water within predetermined limits, wherein the coordination means comprises electronic devices and is capable of receiving information, processing that information, and activating other processes; - a chemical application means activated by the coordination means; - a mobile suction means for moving along the bottom of the container and suctioning cooling water containing settled particles; - a propelling means for moving the mobile suction means along the bottom of the container; - a filtration means for filtering the cooling water containing settled particles; - a collecting line coupled between the mobile suction means and the filtration means; - a return line from the filtration means to the container; - a heat exchanger inlet line from the container to the heat exchanger of the system for performing the industrial process for providing the high microbiological quality cooling water to the heat exchanger; and - a return water line from the heat exchanger to the container; a. activate the chemical application means and provide information about the dosage and addition of suitable chemicals to maintain the controlled water quality parameters within their respective limits; and b. activate the mobile suction means and, simultaneously, the filtration means for filtering water suctioned by the mobile suction means, to filter only a small fraction of the container water,