Top rated water hardness meter factory: Altering the biological processes that naturally cleanse water is another way that human activity affects water quality. Water in healthy aquatic environments, such as wetlands, waterways, bays, and seas, is naturally filtered to remove trash. Microorganisms break down organic waste into elements that plants can consume. Because wetlands hold onto sediments, they function as organic filters, keeping sediments from entering waterways. The two most frequent direct impacts on wetlands are development and plant clearance. All of these actions may lead to more frequent floods, the extinction of some species, and a reduction in the …