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– pollutants, simultaneous presence of which in wastewater or off gases needs to be registered with summing up of their effect.

Penetration into water, air and soil of microorganisms, chemicals, toxic substances, wastes, or wastewater in concentration making them unacceptable for use.

Sewage from a non-domestic source of pollutants into amunicipal (often state-owned) wastewater treatment system. Indirect discharges can be of commercial or industrial fa

[French agressif – capturing, hostile] – term used for identification of water solutions containing salt, acid and other components with a heightened capacity to chemical