//Quality of groundwater poor: study

Quality of groundwater poor: study

KOCHI: The city lacks adequate drinking water. There are several locations where the Kerala Water Authority does not supply water at all. Even in those areas where there is water supply, not all houses have been provided with water connection. Many of the inhabitants in residential localities depend on water brought by tankers. The tankers reportedly source the water from wells at various places. Most people are ignorant of the quality of water so supplied.

A study of water samples, conducted as part of an environmental study in Kochi, has found that in general, the bacteriological quality of the groundwater in the city is poor. The study was conducted in connection with the Kochi metro rail project.

The samples were taken from Aluva, Kalamasserry, Edapally, Palarivattom, Ernakulam North, Ernakulam South, Vyttila and Thripunithura. All the water samples subjected to the study had coliform bacteria to varying extent.

The ICMR standard for drinking water stipulates that in individual or small community supplies, the coliform content should not exceed 10 MPN per ml. Only one well conformed to this level. Salmonella, a reported pathogen, was present in 12 out of 16 wells.

The water samples were collected from dug wells in households and institutions to understand the quality of water along the proposed project route.

http://www.hindu.com/2006/02/24/stories/2006022421890400.htm