Chaidez Cristobal, Soto Marcela, Martinez Celida, Keswick Bruce
Centro de Investigacion en Alimentacion y Desarrollo, A C Carretera a ElDorado km. 5.5 Culiacan, Sinaloa, Mexico.
J Water Health. 2008 Mar;6(1):125-9. doi: 10.2166/wh.2007.011.
A potable water survey, in two important municipalities of the state of Sinaloa, Mexico was conducted. Culiacan, capital city of Sinaloa and its neighboring municipality, Navolato were selected to enumerate Aeromonas hydrophila, Escherichia coli, fecal and total coliforms, Pseudomonas aeruginosa, and Heterotrophic plate count bacteria from 100 households' taps. Manganese; residual chlorine; pH; temperature and turbidity were also examined. Overall, Aeromonas hydrophila was not detected in any of the samples, 3% contained Escherichia coli, 28% had fecal and 46 total coliforms, P. aeruginosa was present in 15% of the samples. HPC bacteria were found in all of the samples but 43% had numbers greater than 500 CFU per ml. The average numbers obtained for the physico-chemical parameters were 0.15 mg/L; 0.32 mg/L; 6.5; 28.7 degrees C and 2.92 NTU for manganese, residual chlorine, pH, temperature and turbidity, respectively. The findings of the current study demonstrate that potable water from both municipalities can harbor substantial numbers of indicator and opportunistic pathogens suggesting that additional treatment in the household may be needed.
在墨西哥锡那罗亚州的两个重要城市进行了一次饮用水调查。锡那罗亚州的首府库利亚坎及其邻近城市纳沃拉托被选中，对100户家庭水龙头中的嗜水气单胞菌、大肠杆菌、粪便和总大肠菌群、铜绿假单胞菌以及异养平板计数细菌进行计数。还检测了锰、余氯、pH值、温度和浊度。总体而言，在任何样本中均未检测到嗜水气单胞菌，3%的样本含有大肠杆菌，28%的样本有粪便大肠菌群，46%的样本有总大肠菌群，15%的样本中有铜绿假单胞菌。所有样本中均发现了异养平板计数细菌，但43%的样本中细菌数量超过每毫升500 CFU。锰、余氯、pH值、温度和浊度的理化参数平均数值分别为0.15 mg/L、0.32 mg/L、6.5、28.7摄氏度和2.92 NTU。当前研究结果表明，这两个城市的饮用水中可能含有大量指示性和机会性病原体，这表明家庭可能需要进行额外处理。
