Current problems of delivering high quality drinking water
to the population of St. Petersburg

Summary

The results of studies carried out by the experts of SUE «Vodokanal of St. Petersburg» and Centre for hygiene and epidemiology within the frames of Work program of water quality process inspection for the purpose of public health monitoring are presented. Monitoring the quality of drinking water delivered to the population of St. Petersburg and its surroundings is carried out for 86 parameters in 174 control points at every stage of water treatment with regularity from daily to monthly. Analytical drinking water quality control was carried out with the use of advanced methods and equipment. To evaluate the efficiency of the measures for delivering epidemiologically safe drinking water to the population an «infectious hepatitis» morbidity rate was introduced. The results of social-hygienic monitoring show sustainable long-term improvement of water quality parameters and the tendency for population morbidity decrease. The following measures for ensuring safe drinking water supply have been developed: introduction of UV drinking water disinfection; use of two-stage drinking water disinfection with the combination of physical and chemical methods; conversion to disinfection with sodium hypochlorite and ammonia sulphate; introduction of water source quality biomonitoring and sorbent dosing systems; construction of an advanced water treatment line. The comprehensive approach to drinking water quality monitoring allowed to develop the Concept of delivering physiologically adequate drinking water to the St. Petersburg population and give an objective estimate of the water supply services with account of the assessment of consumer’s risk and full-value of water.

Key words

potable water , sanitary-epidemiologic inspection , monitoring system , physiological full value of water

On new sanitary regulations on zones of sanitary protection of drinking water supply sources

Summary

The information on the enactment of the revised version of the sanitary regulations on zones of sanitary protection of the Moscow drinking water supply sources is presented. Notes to the redraft of the sanitary regulations together with the motivation of the changes from legal and hygienic angles are given. The order of developing the Project of sanitary protection zones, the procedure of reconciliation and approval in accordance with the planning regulation are set out.

Key words

sanitary-epidemiologic inspection , drinking water supply source , sanitary protection zone , sanitary regulations

About the Normative Document Sources of Centralized Potable Water Supply. Hygienic Requirements. Rules of Selection and Quality Control

Summary

Issues touched upon in a draft new normative document concerning the sanitary classification and rules of the selection of a source of centralized potable water supply are considered. The comparative analysis of a range and contents of the sanitary norms in force applying to natural water objects and sources of centralized potable water supply is made. Three professional tasks of a sanitary inspector for solution of which this document is necessary are formulated. The approval of this draft SanPiN (Sanitary Rules and Norms) in the capacity of a normative legal act will stimulate the solution of problems of potable water supply sources by means of their structurization, making on this basis the plan of concrete prophylactic measures with economic analysis of their costs and risk for health.

Key words

centralized potable water supply , control of potable water quality , state standard , normative documents , sanitary-epidemiologic inspection