Khadse G K, Andey S P, Nanoti M V
Geo-Environment Management Division, National Environmental Engineering Research Institute, Nagpur 440 020.
J Environ Sci Eng. 2005 Jul;47(3):242-9.
Water quality analyses were carried out on surface and subsurface samples collected from four villages in Nagpur district. Out of 68 samples, 36 had TDS exceeding the desirable limit i.e. 500 mg/l, out of which one dug well from Parsodi exceeded the permissible limit--2000 mg/l. Fluoride concentration in 3 sources exceeded desirable limit 1.0 mg/l. Nitrate exceeded desirable limit of (45 mg/l) in 18 sources, out of which one borewell sample from Salwa exceeded the permissible limit--100 mg/l. The iron content found 1.0 mg/l in 9 samples and 3.9 mg/l in one handpump water sample from Salwa. Total hardness exceeded permissible limit (600 mg/l) in 8 samples. Maximum hardness (3,582 mg/l), chloride (1,716 mg/l) and magnesium (572 mg/l) were observed in dug well samples from Parsodi. Trace metal concentrations in all the samples were well within the desiragle limit. Arsenic was not observed in any samples. Pesticide levels found within the Food and Agriculture Organisation (FAO) guidelines regulated for drinking water. 71% of the sources were positive for TC, out of which 94% and 79% sources were found positive for FC and FS respectively. Significant increase in bacterial counts between sources and eventual use has been noticed.
对从那格浦尔区四个村庄采集的地表水和地下水样本进行了水质分析。在68个样本中，36个样本的总溶解固体（TDS）超过了理想限值，即500毫克/升，其中帕索迪的一口挖井超过了允许限值——2000毫克/升。3个水源的氟化物浓度超过了理想限值1.0毫克/升。18个水源的硝酸盐超过了理想限值（45毫克/升），其中萨尔瓦的一个钻孔样本超过了允许限值——100毫克/升。在9个样本中发现铁含量为1.0毫克/升，在萨尔瓦的一个手动泵水样中铁含量为3.9毫克/升。8个样本的总硬度超过了允许限值（600毫克/升）。在帕索迪的挖井样本中观察到最大硬度（3582毫克/升）、氯化物（1716毫克/升）和镁（572毫克/升）。所有样本中的痕量金属浓度均远在理想限值之内。在任何样本中均未检测到砷。农药水平在食品及农业组织（粮农组织）规定的饮用水准则范围内。71%的水源总大肠菌群呈阳性，其中94%和79%的水源分别被发现粪大肠菌群和耐热大肠菌群呈阳性。已注意到水源与最终使用之间细菌数量的显著增加。
