a Lot of Dirty Boiling Water in the Pool For Filtration in the Street, Cloudy, Gray, Brown Water, Urban Treatment Facilities, Water is Foaming From Bacteria and the Processes of Decomposition of Mud, the Process With the Formation of Gas, the Stage of Water Purification, Reuse of Water Resources, the Water Supply System in the City. Wastewater Treatment Plants in the City. Pools For Filtration and Protection of Polluted Water. Excursion to the Main Treatment Station, Visitors in Orange Waistcoats Are Visible Behind the Pools With Defended Water, Sewage and Water Treatment in the City, Clean Water in Our Houses, Dirty Gray, Red Turbid Water in Tanks, Outdoor Pools on the Street, Outdoor Filtration, Scientific Developments and Modern Methods of Cleaning, Water Quality Standards, Bacteria in Water, Drinking Water Quality, High Standard, the Future of the Planet and Humanity