Water pollution

Earth Platform > Pollution > Water pollution

What is water pollution?

Water pollution is considered all activities that will lead to the decline of water quality. Agriculture, industry and households are all responsible for water pollution. The sewerage can run over in rivers, lakes or oceans. Pollution can cause severe damage to the water's ecosystem. Results could be that sources of drinking water will be affected, making it harder and more costly to purify them.

How to trace water pollution?

water pollutedThe waters usually are being tested on pollution. Usually somebody from the government takes samples from the water. These will get tested and analysed in a laboratory. Sometimes fish will be used as sample. Specified characteristics of the fish give information about the kind of pollution. Sometimes computer programs are used to make models about the dangers in the water.


Most dangerous kinds of water pollution

water pollutionThere are different levels of pollution. The first are substances that stimulate illness. These substances are bacteria, viruses and monocellular which live in sewage and waste. The second grade in pollution is oxygen consumption pollution. This is digested by oxygen using bacteria. When these bacteria convert the pollution, the oxygen disappears from the water. All organisms in such water will die because of oxygen shortage. The third grade encloses the inorganic pollution that is water-soluble. Examples of these are acids, salt, and metals. When there's a large number of this pollution in the water, it can’t be used as drinking water and the vegetation in the water will die. Even nutrient will pollute the water. Some substances such as nitrates and phosphates will stimulate the grow of algae and water vegetation, and using all the oxygen. This causes fishes to die. Organic substances can pollute the water, examples are oil, plastic and pesticide. These are harmful for humans, animals and vegetation in the water. The most dangerous grade of pollution is sediment. The sediment will prevent the water to absorb the light. Radioactive substances which are water-soluble, can cause cancer, birth defectss or genetic disorder.


Where does water pollution originate?

water pollutedWater pollution could be traced to the outlet. There are deliberate dumpings by factories. Manure that is used for the agriculture is harmful for the groundwater. An oil tanker that loses oil is also a polluter. Water pollution without outlet is acid rain and gases that are released by the industry and transport. They penetrate the earth and run to the groundwater. Acid rain (or more accurately acid precipitation) occurs when sulphur dioxide and nitrogen oxides are emitted into the atmosphere, undergoing chemical transformations and are absorbed by water droplets in clouds. The droplets then fall to earth as rain, snow, or sleet. This can increase the acidity of the soil, and affect the chemical balance of lakes and streams. The emission of sulphur dioxide(SO2), nitrogen oxides (Nox) and ammonia (NH3) form in the air acids (the nitric acid and the sulphuric acid), which through wet precipitate (such as rain, snow and hailstone), dry precipitate (such as gasses) or trough fog come down. You also could be polluting the water, by using some sorts of cleaning products and pesticides, and flushing paint of bleaches.


News about water pollution

Sustainable Ecosystems and Community News - ENN

New robotic lab tracking toxicity of Lake Erie algal bloom - A new research tool to safeguard drinking water is now keeping a watchful eye on Lake Erie. This week, a robotic lake-bottom laboratory began tracking the levels of dangerous toxins produced by cyanobacteria that bloom each summer in the lake's western basin.The goal is to provide advance warning to municipal drinking water managers and thereby prevent a recurrence of the water crisis that left more than 400,000 Toledo-area residents without safe drinking water for about two days in early August 2014 due to high levels of microcystin toxins.
Coral Reefs in the Gulf of Aqaba May Survive Global Warming, New Study Finds - Coral reefs in the Red Sea’s Gulf of Aqaba can resist rising water temperatures. If they survive local pollution, these corals may one day be used to re-seed parts of the world where reefs are dying. The scientists urge governments to protect the Gulf of Aqaba Reefs.Coral reefs are dying on a massive scale around the world, and global warming is driving this extinction. The planet’s largest reef, Australia’s Great Barrier Reef, is currently experiencing enormous coral bleaching for the second year in a row, while last year left only a third of its 2300-km ecosystem unbleached. The demise of coral reefs heralds the loss of some of the planet’s most diverse ecosystems.