MARGAO: Sample testing of well waters in the vicinity of the Sonsodo waste dumping site by the Goa State Pollution Control Board has revealed high levels of coliform.

Well water sample of Vishal Gude, a resident of Amrutnagar-Sonsodo put the total coliform to 490 as against the permissible limit of 10. Similarly, the feacal coliform was around 170 when it ought to have been nil.