Nahid Raeisi, Samaneh Mehraban Nawaz, Ahmad Reza Yari, Mohammad Jahandideh, Fariba Naghavi, Reza Zeraatkar, Hadi Niknejad, Mohsen Hesami Arani,
Volume 18, Issue 4 (3-2026)
Abstract
Background and Objective: Swimming pools are considered as a potential source of microbial and chemical contamination due to direct and continuous contact with different groups of people. The present study was conducted to investigate the water health indicators of swimming pools in Kashan and Aran-Bidgol and compare them with the existing standards in the country in the years 2017-2021.
Materials and Methods: In this descriptive-analytical study with a longitudinal design, 830 samples were taken from all indoor and active pools in 2017-2021. Physicochemical parameters, and microbial parameters were measured. Finally, the data were analyzed using SPSS software 16.
Results: The concentration of free residual chlorine, combined chlorine, pH, turbidity, and corrosivity were in the desired range in 53 percent, 48 percent, 67 percent, 81 percent, and 67 percent of the water samples, respectively. None of the samples were contaminated with Pseudomonas. A significant and inverse relationship was observed between the bacterial population and free residual chlorine, and a significant and direct relationship was observed between the bacterial population and turbidity (p<0.005).
Conclusion: Due to the low compliance of the water chlorine level with the standard and the observation of coliform bacteria, Staphylococcus aureus, and heterotrophs, it is necessary to continuously monitor the physicochemical and microbial parameters of the water, as well as to carry out proper health surveillance and disinfection.
