Question raised in Lok Sabha on Depletion in Ground Water Level, 17/11/2016. Ground water is primarily being used for irrigation, drinking and industrial purposes. Due to growing urbanization, industrialization and population, ground water levels in various parts of the Country are declining. Central Ground Water Board (CGWB) under the Ministry of Water Resources, RD & GR carries out ground water monitoring, four times a year, on regional scale through a network of observation wells in the Country including Chhattisgarh.