Details of pollution levels in Delhi with respect to Air, Water and Noise

The document has the link to various data regarding the pollution levels with respect to air, water and noise measured at different places in Delhi.
Source of Data
Department of Evnironment, Govt of NCT of Delhi
Obtain data from
http://www.delhi.gov.in/wps/wcm/connect/environment/Environment/Home/Environment+%28Air%2CWater%2CNoise%29/