Safe drinking water for slum dwellers of Vikasnagar, Lucknow

There is a slum in Vikasnagar, Ring road, Teduphulia, in Lucknow where about 500 people live. They have no basic facilities like drinking water, food, occupation, medical facilities, schools etc. Can you please recommend an organisation which can help them solve their problem, primarily the safe drinking water?

Regards T.C.Chandran