คุณภาพทางจุลชีววิทยาของน้ำดื่มในมหาวิทยาลัยราชภัฏนครศรีธรรมราช
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Abstract
Microbiological quality of Drinking Water at Nakhon Si ThammaratRajabhatUniversity
This research aims to study the microbiological quality of drinking water in Nakhon Si ThammaratRajabhat University (NSTRU). Random sampling of drinking water was taken from 12 buildings, at three locations per building. These were buildings 4, 6, 9, 10, 11, 12, 13, 16, the student cafeteria, the Centre for Academic Services, the Centre for Health Promotion, and the Office of Science and Technology building. Samples were collected once per month, for six months (January - June 2011). In total 216 samples were analyzed for living microbial contamination. The microbial contamination values obtained were compared with the drinking water standards of the Thai Industrial Standards Institute, and found that 154 samples (71 percent) did not meet the standard. 62 samples (29 percent) did pass the criteria of the value of between2.00-112.60x102 colonies per milliliter. The drinking water samples with the most contaminants were collected from buildings 10, 12, 16, and the cafeteria. Samples with the least contamination came from the water cooling unit at the Centre for Academic Services.
The results of this analysis suggest that those who consume drinking water from any of the drinking units from which samples were taken in the buildings of NSTRU are doing so at high risk to themselves. The water contains microorganisms which do not meet stated standards, and this indicates that clean drinking water is not being provided.
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