By: Petey Lowrie Water on Earth is important and we need to make sure it stays safe to use and is accessable.

There is a limited water supple because 97% of Earth’s water is salt water. Saying that, you cannot drink it because it causes dehydration and it is not suitable for watering crops. However, water can be processed to make it suitable to drink but it is very costly. *Much of the water is replaced due to the water cycle.*

Water shortages are caused by water being used faster than the water cycle can replace it. These shortages can cause droughts which disables the use of water and can lead to bad crops.

Water pollution is caused by pollutants in the water. Some are iron and copper which makes water unpleasant to drink or bath in. Others can cause death. Filtered water is the best water you should drink and you should always make sure it is safe.

Sewage Sewage is human wastes that is flushed down sinks and toilets that cause water pollution. Even treated sludge can pollute. With bacteria, water can be very dangerous or even deadly to people who drink it.

Agricultural waste Animal wastes and farm chemicals chemicals are also sources of pollution. Fertilizers- chemicals to provide nutrients for plants to grow. Pesticides- chemicals to kill bugs that eat or kill crops. These chemicals cause pollution.

Oil and Gasoline Oil spills are the most dangerous and dramatic type of water pollution. Oil spills take long to recover and can kill many organisms in the water. There hasn’t been a serious oil spill for years which is a very good thing for our enviorment.

Factories Chemical plants, paper and textile mill and factories that use metals produce waste that can pollute water. Humans that drink this water are now exposed to many of these dangerous chemicals and pollutants.

The End