pollution top 10

The toxic top 10:

  1. Mercury pollution from gold mining
  2. Lead pollution from industrial parks
  3. Pesticides from agriculture
  4. Lead smelting
  5. Chromium pollution from leather tanning
  6. Mercury residue from other mining
  7. Lead pollution from mining
  8. Lead pollution from improper battery recycling
  9. Arsenic in groundwater
  10. Pesticide manufacturing and storage

Notably, groundwater arsenic is the only naturally occurring pollution problem—and it is in ninth place.