重庆市南川区红层找水工程水质检测分析

Analysis of water quality in red layer in Nanchuan district of Chongqing

目的了解南川区地下水质,保证饮水安全,为开展地下水环境保护提供依据。方法对南川区2012年打出的1200口地下水井按5%抽样,共采集样品60件,回顾性调查采样14件,全部74件水样品按GB/T5750-2006《生活饮用水标准检验方法》检测,检测结果按GB14848-93《地下水环境质量标准》Ⅲ类水源水进行评价。结果 74个水样均属清洁,较清洁范围,水质较好以上的31个,占41.89%,较差以下的43个,占58.11%。结论南川区红层地下水水质基本能满足人畜饮用标准,但普遍存在微生物污染严重,铁锰浓度超标等安全隐患,不适宜直接饮用。

Objective To understand the quality of groundwater in Nanchuan district, ensure the safety of drinking water, and provide basis for protection of groundwater environment. Methods Sixty water samples were collected from 1200 groundwater wells digged in 2012 by 5% sampling, and 14 water samples were collected from groundwater wells digged in 2011. The 74 wa- ter samples were detected according to GB/T5750 - 2006 ＂Standard examination method for drinking water＂ , and the detection results were evaluated in accordance with grade 11I source water standard in GB14848 - 93 ＂ Quality standard for groundwater environment＂ . Results The 74 water samples were all clean for use. In term of cleanness levels, 31 samples showed better water quality, accounting for 41.89%, while 43 samples showed poor water quality, accounting for 58.11%. Conclusion In Nanchuan district, red layer groundwater can basically meet the drinking water standard, but serious microbial contamination,