polluted

The southern state's heavy reliance on groundwater and natural water bodies makes it particularly vulnerable, especially as many ponds and wells are polluted.

Most villages had dug wells, but even they were polluted and crops had to be burned because they were unsafe for consumption, the petitioners said.

It’s about who gets to write the rules that govern our economy and who gets to decide how polluted our state will be.

The area of polluted ground stretches to about 100 acres, or the equivalent of about 65 - 70 football pitches.

The authors said their findings at the Tijuana River point to a need for more research into air pollution coming from other polluted rivers and lakes around the world.