Question raised in Lok Sabha on Ground Water Pollution, 08/02/2019. According to Central Pollution Control Board (CPCB) and Central Ground Water Board (CGWB), the ground water available in the country in general is potable and suitable for various usages. However, localized occurrence of ground water having various chemical constituents in excess of the limits prescribed for drinking water use has been observed in some states. The commonly observed contaminants such as, Arsenic, Fluoride and Iron are geogenic, whereas contaminants such as, nitrates, phosphates, heavy metals etc.