[Evaluation of water sanitation and hygiene in swimming pools in the town of Biała Podlaska].

The purpose of the study was the characteristic of physico-chemical and bacteriological features of water quality in three swimming pools of standard type accepted for most pools in the country, and it was tried to assess their sanitary-hygienic state in relation to the accepted sanitary standards. The study was carried out in the years 1991-1992 taking water samples from each pool twice in a month during water removal, and once in the whole study during pool filling. The physico-chemical and bacteriological studies were carried out by the methods evolved at the National Institute of Hygiene, and the results were compared with the obligatory standards. It was found that physico-chemical parameters of water quality different only slightly between the tested pools. Most evident differences were observed in chloride concentrations. It was noted that falling free chlorine concentration in a pool was associated with increasing bacterial contamination of water. The degree of bacterial contamination of water in that pool was above the permissible value in 18% of the studied samples. The obtained results point out water quality depends, in the first place, on correct performing of disinfection, which was not always adequate in these pools.