Seasonal Variations in Drinking Water Quality.

      Аннотация: The quality of the drinking water has been determined by checking the presence of Coliforms. The coliform is a type of bacteria that can act as a microbial quality indicator of drinking water. The present study concludes that the Drinking water collected from five different locations around Vellore district, Tamil Nadu, India (Ambur, Vaniyambadi, Tirupattur, Jolarpet & Vengalaburam) is potable to drink. These water samples does not contain any harmful bacteria such as Enteric coliform which is very dangerous to human health and a main causative agent for many Water borne diseases. But, the water collected from these five locations shows presence of little number of bacterial populations which are not harmful and it may be beneficial to the living organism .water shows variations in three different seasons (Rainy season, Autumn season and Winter season). The bacterial population was relatively high in Autumn season (October 2018 to November 2018) when compared to other two season, Rainy season (June 2018 to September 2018) and Winter season (December 2018 to February 2019). So, it is recommended to boil the water for better sanitation and to avoid spreading of Water borne disease.

Ключевые слова: Drinking water, seasonal variation, Coliforms and MPN Technique.