Quality and Safety of Drinking Water from Water Vending Machine in Maha Sarakham

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Published: Feb 8, 2019
Keywords:
drinking water water vending machine quality and safety of water consumer protection

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ธนพงศ์ ภูผาลี
Department of Social Pharmacy, Faculty of Pharmacy, Mahasarakham University
สมศักดิ์ อาภาศรีทองสกุล
Department of Social Pharmacy, Faculty of Pharmacy, Mahasarakham University
อรนุช วงศ์วัฒนาเสถียร
Department of Community Public Health, Faculty of Science and Technology, Rajabhat Maha Sarakham University
มาลี สุปันตี
Alternative Agriculture Network–Esan, Kantharawichai District, Maha Sarakham

Abstract

Objective: To investigate quality and safety of drinking water from water vending machines in Maha Sarakham province. Method: This research was a descriptive study collecting 133 samples of drinking water from water vending machines located in seven districts. These samples were analyzed for the quality of water by using the test kits developed by the Department of Health including the testes for coliform bacteria, hydrogen sulfide producing bacteria, free residue of chlorine and water hardness. pH was measured by using pH meter. Test results were compared with the criteria specified in the Declaration of Ministry of Public Health entitled drinking water in sealed containers. Results: Ninety-two samples of drinking water (69.2%) failed the microbiologic criteria on coliform bacteria, while four samples (3.0%) failed the criteria on hydrogen sulfide producing bacteria. For physical and chemical criteria, all water samples had no residual chlorines, while water hardness of four samples (3.0%) exceeded standard value (more than 100 mg/L). Seventeen samples (12.8%) did not meet the pH standard with 14 samples (10.5%) having pH<6.5 and 3 samples (2.3%) having pH > 8.5. There were totally 34 samples meeting all standard criteria (25.6%). Conclusion: Proportion of drinking water from water vending machines in Maha Sarakham province meeting the standard criteria of coliform bacteria, hydrogen sulfide producing bacteria, free residual chlorine, water hardness and pH was 25.6%. Consumer should be more aware of harm and risk of drinking water. The relevant authority should regularly monitor the quality of drinking from water vending machines.

Article Details

Issue
Vol. 10 No. 2 (2018): Jul-Dec
Section
Research Articles

        ผลการวิจัยและความคิดเห็นที่ปรากฏในบทความถือเป็นความคิดเห็นและอยู่ในความรับผิดชอบของผู้นิพนธ์ มิใช่ความเห็นหรือความรับผิดชอบของกองบรรณาธิการ หรือคณะเภสัชศาสตร์ มหาวิทยาลัยสงขลานครินทร์ ทั้งนี้ไม่รวมความผิดพลาดอันเกิดจากการพิมพ์  บทความที่ได้รับการเผยแพร่โดยวารสารเภสัชกรรมไทยถือเป็นสิทธิ์ของวารสารฯ 

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