Many people are drinking river water that is contaminated by human waste.

If it is destroyed, the entire area and hundreds of miles around will be contaminated by nuclear waste.

People whose land was contaminated by toxic waste have sought the help of legal aid groups.

The dam was built in 1940 to keep out water contaminated by waste from the surrounding towns.

Problems: Toxic wastes have contaminated air, soil and water.

These wastes can contaminate the watershed and make other hikers ill.

Nature lay waste, ruined, contaminated, the tragic price humanity paid for the blind worship of science.

Sections of the river are currently contaminated by industrial waste, mainly from the leather tanning industry.

The plant was extensively contaminated during operation, particularly by waste produced while flushing out the tanks inside for maintenance.

Toxic wastes from industries, farms and military installations are contaminating soil.