Hi, I work for Arghyam (http://arghyam.org). I am currently working a personal project which aspires to map various ways by which an urban dweller can reduce his impact on the environment.

1. One such source of information could be traditional sources of knowledge. 
2. In the case of water, the various possible ways could be finding more eco-friendly alternatives to using toothpastes, shampoos, soaps, washing powders etc

Are there ways by which an urban dweller, for instance, could reduce the "contamination" at the point the waste water leaves his house -at the sink,for instance. At the same time, its important that these alternatives are easily available to the urban dweller, and the dweller should also be able to "integrate" such practises easily into his day-to-day lifestyle with relative ease.

I shall be grateful, if you could share your experiences and knowledge with me or direct me to similar sources of information.

Thanks and Regards,

Sanchayan