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UDC 628.1.032

Chesnokova S. M., Savel'ev O. V.

Estimation of water quality in decentralized water supply sources of Vladimir

Summary

The effect of drinking water chlorination on its organoleptic properties posing a threat to the public health is considered. The water sanitary measurements, the compliance with the requirements to its physiologic adequacy, integral toxicity of the water in the decentralized water supply sources of Vladimir were studied. It was stated that water in all three investigated objects used by the population as alternative drinking water sources was physiologically adequate in relation to the concentration of macroelements and complied with the sanitary chemical requirements of SanPiN 2.1.4.1074-01. As for the concentration of microelements (fluorine and iodine) water in all the investigated objects was not physiologically adequate and did not meet the sanitary and hygienic requirements. The concentration of fluorine in the investigated sources of decentralized water supply and in drinking water of the Nerlinskii water intake varied from 0.1 to 0.3 mg/dm3 what was much less than the lowest limit of the physiologic adequacy and MPC. Iodine in the investigated sources was not detected. In some springs and wells of Vladimir nitrates were detected in concentrations much higher than the MPCs for drinking water. Water in two springs in Vladimir showed hypotoxicity for small crustaceans Daphnia magna Sr. what evidenced the presence in them of trace concentrations of toxic substances hazardous to health.

Key words

potable water , toxicity , physiological full value of water , decentralized water supply source , sanitary chemical indicators

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