Environmental Hygiene2016.08.17. // News

The quality of tap water in almost all regions raises serious concerns as physicians and environmentalists. According to the Institute of Human Ecology and Environmental Hygiene them. an Sysina in the Russian Federation and hygienic requirements and chemical indicators do not correspond to one third of the sample water through the sanitary and biological – in every ten. Why is that? Investments in construction and modernization water supply and sewerage in the last 15 years has steadily declined, and as a result – today more than 50% of water supply networks exceeded the life expectancy and are in catastrophic condition. Introduction modern methods of cleaning and disinfection (chlorination alternative) of tap water is very slow and not universal, and this despite the fact that about 70% of industrial enterprises did not have modern sewage disposal facilities, preferring to dump waste and industrial effluents into rivers and lakes, which are the main sources of tap water. What has 'life-giving' the moisture from the tap? The main harmful components of the tap water are: mechanical contaminants, heavy metals, chlorine and its derivatives, organic compounds, radionuclides, bacteria: central water supply system of large and small A city set on the rivers, usually looks like this: water intake upstream spillway – downstream. This is done in order to drink their same wastewater. The result – runoff flowing on to the next town that downstream. In many major cities for about two-thirds of the used water after settling, and chemical treatment in the fields of aeration and treatment plants is returned to the city water supply network.

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