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Qualitative and health-related evaluation of point-of-use water treatment equipment performance in three cities of Iran

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Abstract

Background

Application of the point-of-use water treatment (POU-WT) systems has consistently increased during the last decade in Iran. In this study, the qualitative performances of reverse osmosis-based POU devices in selected cities of Iran were investigated.

Methods

This applied- descriptive study was conducted in three cities of Tehran, Rasht, and Ahvaz in 2016 (selected based on the level of POU devices sale index in three phases). After choosing the most popular five brands of six stages POU devices, 360 water sampling zones and POU consumer households of the selected cities were measured. Also, the awareness of the consumers about POU-WT systems selection and performance was investigated through a designed questionnaire.

Results

The qualitative parameters in the three cities were acceptable (p < 0.05) for tap water (except for EC in Ahvaz), the output water were as follows: pH = 6.05–7.5, EC = 49.8–58.2 μs/cm, TOC = 0.01–0.23 mg/L and Nitrate = 0.52–4.5 mg/LNO3 (lower or within the range of regulatory limits), Total Hardness = 33–41.5 mg/L and Fluoride = 0.01–0.23 mg/L (which were lower than the admissible limit, with p < 0.05), HPC values were in the range of 543–676 CFU/mL, which exceeded the regulatory level. Results of ANOVA analysis showed significant differences between the selected cities. The results of the questionnaire survey showed that the dissatisfaction of tap water quality and health-related concerns were the two main reasons for household POU-WT systems; awareness levels of 64% of these households about the performances of their POU systems were weak. Also, social media were mostly used by POU-WT users for brand selected.

Conclusion

Based on the results of the tap-water quality application of POU-WT systems are not recommended in Tehran and Rasht, and regarding the outputs of these systems, side effects of softened water, lack of Fluoride and a remarkable increase of the number of bacteria should be considered. In Ahvaz, application of POU-WT systems can decrease the health-related problems and it is necessary to increase the access to read POU-WT efficiency information for the consumers.

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Acknowledgments

The present article has been financially supported by Center for Water Quality Research, Institute for Environmental Research, Tehran University of Medical Sciences, with Research code No. of 29230. The authors would like to sincerely thank Iran University of Medical Sciences and Ahvaz Jundishapur University of Medical Sciences for their cooperation.

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Authors and Affiliations

  1. Department of Environmental Health Engineering, Iran University of Medical Sciences, Tehran, Iran

    Salimeh Rezaeinia & Mitra Gholami

  2. Center for Water Quality Research, Institute for Environmental Research, Tehran University of Medical Sciences, Tehran, Iran

    Simin Nasseri

  3. Department of Environmental Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran

    Simin Nasseri & Masoud Binesh

  4. Department of Environmental Engineering, Faculty of Water Science Engineering, Shahid Chamran University of Ahvaz, Ahvaz, Iran

    Farid Ghalambor Dezfuli

  5. Ahvaz Health Care Office, Ahvaz Jundishapour University of Medical Sciences, Ahvaz, Iran

    Safieh Abdolkhani

  6. Environmental Technologies Research Center, Ahvaz Jundishapur University of Medical Sciences, Ahvaz, Iran

    Neamat Jaafarzadeh

Authors
  1. Salimeh Rezaeinia
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  2. Simin Nasseri
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Correspondence to Simin Nasseri, Mitra Gholami or Neamat Jaafarzadeh.

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Rezaeinia, S., Nasseri, S., Binesh, M. et al. Qualitative and health-related evaluation of point-of-use water treatment equipment performance in three cities of Iran. J Environ Health Sci Engineer 16, 265–275 (2018). https://doi.org/10.1007/s40201-018-0315-5

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  • DOI: https://doi.org/10.1007/s40201-018-0315-5

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