The construction industry is a major source of pollution, responsible of particulate emissions, more water pollution incidents than any other industry. Water allows migration of pollution. As storm water flows over a construction site, it can pick up pollutants like sediment, debris, and chemicals and transport these to a nearby storm sewer system or directly to a river, lake, or coastal water. Analysis and evaluation of project documentation relative to the construction of treatment plants of surface wastewater show that the calculation determining the weighted average concentration of pollutants is carried out incorrectly. The reason is the lack of a clear method of calculation. The present work provides an improved method of determining the initial concentration of the pollutants and proposes measures to prevent pollution. Some recommendations have been presented to prevent pollution in construction industry.

pollutants, wastewater, sewage treatment, concentration, method of determination.