New Delhi, Dec. 27 -- More than 20% of groundwater samples tested in Delhi contained nitrate levels above the permissible limit of 45 mg/l, with some samples reaching up to 994 mg/l - over 22 times the safe standard - according to data submitted by the Central Groundwater Board to the National Green Tribunal (NGT). Delhi fared as the fifth worst-affected state or Union territory for high nitrate contamination, according to the report. Andhra Pradesh fared the worst with nitrate levels touching a peak of 2,296 mg/l, it said.P5

Published by HT Digital Content Services with permission from Hindustan Times....