WATER POLLUTION

WATER POLLUTION

Is the contamination of water bodies. Like lake, stream, river, ocean and underground water. 11% people on the Earth don't have access to safe drinking water.

FACTORIES:

MAIN CAUSES

Release a lot of waste directly into the nearby water bodies and pollute it. The world generates about 5-10 billion tons of industrial waste, each year. Is pumped untreated into river and ocean.

The Earth has billions of people and they all generates a lot of waste every day. The wastes are more difficult to manage and contaminate the water. They lead to diseases like diarrhea and cholera, they can kill about 135 million people. Half of the total ocean pollution is caused by sewage.

SEWAGE:

PLASTIC POLLUTION:

OIL POLLUTION:

HIGHWAY RUNOFFS:

FARMING:

HOUSEHOLD WASTE:

POLLUTION from HEAVY METALS and CHEMICALS:

Every person on this Earth adds some pollutans to water by: utensils, clothes, sheets and bathing using soap, detergent, shampoo etc. Mix up in clean water and it changes to dirty water.

Highways are made up with a lot of toxic chemicals. All the waste and chemicals from the highways are washed away to the land next to the roads or water bodies and contaminate them. In one year, from a single city leaks as much oil into our environment, as a typical tanker spill.

Another kind of toxic pollution comes from heavy metals. Such as lead (use for gasoline),cadmium and mercury (use for batteries).

Main sources of heavy metal pollution are:

Mining.

Chromium salt manufacturing.

Leather tanning.

Lead acid batteries.

e-waste.

Paints.

Fuel combustion.

Thermal power plants.

Our oceans and seas are a big victim of oil pollution. A lot of oil is released into it due to human activities. E.g., Oil spill, is a major problem because a huge quantity of oil is spilled and is catastrophic for: fishes, birds, turtles and sea mammals. Comes from routine shipping. The oil we use at home reaches and dirties the sea water.

In the process of farming , so many chemicals are added to soil. All this chemicals are washed away by rain and reach water.

Like:

Pesticides are used to kill pests.

Insecticides are used to kill insects.

Weedicides are used to kill unwanted plants.

Fertilizers are used to make the soil more fertile.

Plastic is one of the most common materials used these days. Plastic is non biodegradable. It releases toxic chemicals. Survives for very long time. E.g., Plastic bottles, bottles caps, survive for more than 400 years. Side effects: -If marine animals swallow plastic, it chokes them and they die.