This regulation is the responsibility of National and International regulatory authority (Mohammad and Ahmed 2006).
Four sites in Ranchi city, Bihar were analyzed for metal contamination. The concentration ranges (ppm) were 13.733-20.667 for Pb in peas, 0.3333-4.333 for Ni, 1.167- 2.933 for Ni and 0.100-0.800 for Cd in cucumber, 0.267- 0.867 for Cd in coriander (Ghosh et al., 2011).