Water Pollution

oil that is escaping from a damaged tanker

heavy metals that are leaching out of an underground mine

water runoff from residential lawns

untreated sewage that is accidentally released from a wastewater treatment plant

water has been circulated around power-plant generators

it increases the number of disease-causing organisms in aquatic environments

it reduces the amount of dissolved oxygen in aquatic environments

it decreases the nutrient levels in aquatic environments