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A model for predicting THM presence in networks of water supply systems

机译：预测供水系统网络中THM存在的模型

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The European normative, implemented in the Spanish national legislation in 2003, reduced the acceptable maximum concentration of THMs in drinking water, from 150 to 100 (i/L. This implies that many existent facilities could not achieve this requirement. Generally speaking, the problems related to THMs in the area studied occur in certain periods during the year, mainly in summer. The present concentration of trihalomethanes (THM) in networks samples of water supply systems was predicted based on a set of easy parameters measured continuously at the site, which evidently did not include THM concentration. Consequently, when these values started being high, it was possible to take necessary measures (e.g. to modify the water source, reduce chlorination, etc.) to prevent higher values which are not permitted by law. The analysis of disinfection by-products is expensive and to develop a simple tool that will allow measuring the concentrations of trihalomethanes, particularly in small, poorly resourced water supplies is therefore a worthy intention. Other studied aspects have been the season of sampling or the sampling point. Data of drinking water supply systems coming from four regions in Spain have been used, In total 893 complete analyses have been managed. For obtaining the model, a statistical analysis of multiple regression and diverse Anova tests have been carried out.
机译：2003年，西班牙国家立法实施的欧洲规范将饮用水中THM的可接受最大浓度从150降低至100（i / L。这意味着许多现有设施无法达到此要求。与研究区域的THM有关的年份主要发生在一年中的某些时期，主要是在现场连续测量的一组简单参数的基础上，预测了供水系统网络样本中三卤甲烷（THM）的当前浓度。因此，当这些值开始很高时，可以采取必要的措施（例如，修改水源，减少氯化作用等），以防止法律不允许使用更高的值。消毒副产物的成本很高，并且开发一种简单的工具可以测量三卤甲烷的浓度，特别是在小而贫瘠的地区因此，资源丰富的供水是值得的。研究的其他方面是采样季节或采样点。使用了来自西班牙四个地区的饮用水供应系统的数据，总共进行了893次完整分析。为了获得该模型，已对多元回归和各种方差分析进行了统计分析。

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