NITRATES AND FLUORIDES CONTAMINATION IN GROUND WATERS OF PATAUDI AND FARUKHNAGAR BLOCKS OF GURGAON DISTRICT, HARYANA

摘要

Four hundred and thirty three water samples (262 from Pataudi and 171 from Farukhnagar block) were collected from running tube-wells and analyzed for various chemical parameters especially for NO_3and F~-. The collected water samples were unsafe for drinking purposes by 25.7% in Pataudi and 32.8% in Farukhnagar block. Spatial distribution of nitrate polluted waters indicated that about 15 and 20 per cent area of Pataudi and Farukhnagar blocks had waters with more than 45 mg 1‘ nitrate. Around 39.5%water samples from Pataudi had fluoride beyond 5 mg 1' whereas 37.4% samples in Farukhnagar block were above critical limit. Fluoride was widely distributed in waters of both the blocks and spatial distribution revealed that in about 30% area in Pataudiblock waters had fluoride beyond permissible limit with southern and central parts waters rich in fluorides. In Farukhnagar, about 40% area had fluorides rich waters with North-easteni, South-eastern, Central and North-western parts being more predominant. The results indicated that the water quality for drinking purpose is deteriorating and needs immediate remedial measures.