WATERWATER

Water Water

Our planet is called Earth although it could be called Water, because it is more than 30% covered by land. From other 70% of the water 2.7% is fresh water, and most of it is in ice and icebergs.

Use waterUse water

We use water for different purposes: drinking and hygiene, recreation, tourism, plants and animals (their habitats are in water), transport.

Drink and hygieneDrink and hygiene

RecreationRecreation

TourismTourism

Plants and animalsPlants and animals

TransportTransport

Water supplyWater supply

• The water we drink comes from The water we drink comes from water supply. Before the water let in water supply. Before the water let in the water supply, must to go trough the water supply, must to go trough cetrain procedures.cetrain procedures.

Raw waterRaw water

The water pumped from underground is called raw water and in that water there is ammonia and bacteria and chlorine and oxygen are added to purify it.

Ammonia and bacteriaAmmonia and bacteria

• Ammonia + Ammonia + BacteriaBacteria

Chlorine in waterChlorine in water• If you wonder why your wyter is If you wonder why your wyter is

sometimes white like this it doesn’t sometimes white like this it doesn’t mean tt is chlorine but air under mean tt is chlorine but air under pressure.pressure.

Sand filtersSand filters

•All waste water goes into the sand filters, dirt stays there and clean water goes into the pool of clean water and later in the reuse.

Waste waterWaste water

•Every factory has its own waste waters. So, the sugar factory Šećerana in Virovitica also has its own waste waters which are refined to biological waste water treatment plants and than released into nature.

24 hours24 hours

•If somewhere in the water mains a pipe is dammaged, it can be immediately closed by hand or by computer.

•There is 24- hour security.

Water pollutionWater pollution

• The republic of Croatia is rich with natural The republic of Croatia is rich with natural sources of water and according to the cleanness sources of water and according to the cleanness it occupies fifth place in Europe.it occupies fifth place in Europe.

• The causes of pollution are: The causes of pollution are:

- water pollution from industrial sources- water pollution from industrial sources

- adverse substances from the chimnies - adverse substances from the chimnies

- an unorganized disposal of waste- an unorganized disposal of waste

- waste waters - waste waters

- exhaust fumes of cars, ships and airplanes- exhaust fumes of cars, ships and airplanes

Water pollution from industrial Water pollution from industrial sourcessources

Adverse substances from the Adverse substances from the chimnieschimnies

An unorganized disposal of wasteAn unorganized disposal of waste

Waste watersWaste waters

Exhaust fumes of cars, ships and Exhaust fumes of cars, ships and airplanesairplanes

Sweden Sweden Water pollution also affects the extincion of plants and animals, for example:In Sweden, from 85 000 lakes, 16 000 lakes became acidic, and 5 000 lakes lost fish.

South AmericaSouth AmericaIn South America due to the oil spill in the ocean a spicies of whale became endengered.