pollution Sources

The Revealed sources of pollution liquidate and establish zones of sanitary protection, i.e. Territory round a source of water supply and head water constructions with the special mode warning adverse changes in quality and quantity of water. At use for water supply of superficial waters allocate two belts of sanitary protection. Borders of the first belt, or a zone of a strict mode, should be established depending on local sanitarnotopograficheskih and hydrological conditions, but in all cases than 200 m from a water fence should settle down upstream on distance not less; downwards on a current-not less of 100 m from a water fence, on adjoining to a water fence I protect not less than 100 m from a line ureza waters at its highest level. In territory of the first belt all kinds of building, residing of people, release of drains, bathing, a watering place and vypas cattle, linen washing, fishing, application of pesticides, organic and some kinds of mineral fertilizers are forbidden.

Borders of the second belt of sanitary protection of the river or the channel, being a water supply source, establish taking into account possible pollution of an open reservoir and its ability to self-cleaning.

At the expense of self-cleaning processes concentration of arriving pollution, especially pathogenic microflora decreases. It is established, that process of dying off of pathogenic microorganisms in the rivers basically comes to the end during five, and in the conditions of a hot climate of three days. On the basis of it the top border of the second belt should be removed from a water fence so that water run has provided the specified period of time. In this connection at use of the large rivers of border of a zone extend on tens kilometres (20-30 km), and at use of the small rivers in the second belt include all river basin. On territori the second belt all kinds of building are resolved by bodies of sanitary-and-epidemiologic service with which terms of designing and object building are co-ordinated; the industrial enterprises, settlements and residential buildings should be arranged well; The economic-household and industrial sewage which are let out in open reservoirs, zones entering into the second belt, should have the raised degree of clearing. It is forbidden to pollute reservoirs and territory dump of a sewage, dust, manure, industrial wastes, pesticides etc.