sewage toxifying ground water
HYDERABAD : The recent spate of moderate to heavy rains in the city may have boosted the groundwater levels by at least half a metre, but a new report reveals that the water thus recharged is highly contaminated with fluorides, nitrates and large quantities of iron. A report on the state's groundwater profile by the Central Groundwater Board (CGWB) says harmful chemicals are present in the water beyond the permissible limits. "It is bad news for the people as the report mentions a rise in the nitrate levels in the water. The basic source of nitrates in water sources is from sewerage , which seeps from improperly built septic tanks," Dr Shakeel Ahmed, chief scientist, National Geophysical Research Institute (NGRI), told TOI. Source – TOI - http://timesofindia.indiatimes.com/home/environment/pollution/Groundwater-turning-toxic-with-sewage/articleshow/49020804.cms