ASSESSMENT OF RISK ASSOCIATED WITH THE INVENTION OF IRON WITH DRINKING WATER FOR THE HEALTH OF THE POPULATION OF THE ZHYTOMYR REGION

Abstract

The aim of the study is to assess the iron content in drinking water sources of decentralized water supply in rural areas of Zhytomyr and identify quantitative characteristics of its oral intake with drinking water for different age groups of the rural population. Methodology. A total of 450 drinking water samples were taken from all districts of Zhytomyr Oblast. Analytical studies of water samples for total iron content were performed by photometric method on the basis of the Measuring Laboratory of Polissya National University. The scientific novelty is to assess the risk of non-carcinogenic effects due to the supply of iron in drinking water for the rural population of Zhytomyr region of different ages. Conclusions. The average content of total iron in drinking water of rural settlements ranged from 0.55 in Zhytomyr region to 1.06 mg/dm3 in Novohrad-Volynskyi region. Its maximum content was found at the level of 10.6 mg/dm3 within Berdychiv and Novohrad-Volynskyi regions. It was found that the average daily dose of iron with drinking water varied from 0.02 to 0.04 mg/kg×day for adults at its average concentration and from 0.21 to 0.35 – at the maximum concentration of iron. For children with an average iron content, this value ranged from 0.02 to 0.05, and at a maximum content of 0.2–0.51 mg/kg×day. The calculated values exceed the reference dose, which is 0.3 mg/kg×day, only at maximum iron concentrations. The lowest risk factors were recorded for adolescents, men and women in Zhytomyr region at an average iron concentration of 0.55 mg/dm3, and the highest values were found for children in Berdychiv and Novohrad-Volynskyi regions at a maximum iron concentration of 10.6 mg/dm3. It is established that the magnitude of the risk exceeds one only if the iron concentration increases to 10 mg/dm3 and more.