Abstract
The occurrence of discoloured water at the customers’ tap is a great worry for water companies throughout the world. Customers’ express their dissatisfaction when their tap water discolour. This greatly undermines their confidence in water companies. This discolouration is mainly caused by increased levels of Fe and Mn accumulation. This paper presents analysis of a six-year dataset comprising of 36 water quality parameters and customer complaints data covering 176 different district metered areas (DMAs) to identify relevant parameters that influence Iron (Fe) and Manganese (Mn) accumulation potential. Customer complaints data were also investigated for seasonal trends. From the analysis of the data, it was observed that of the 36 parameters only few parameters such as those related to bio-chemical oxidation and sorption significantly influenced the accumulation of Fe and Mn. Majority of the DMAs showed significantly high peaks of customer complaints during summer. These spikes may be attributed to increased water consumption and warmer water temperatures during this period.
Published Version
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