Como é que se diz isto em Inglês (EUA)? could you please correct my writing ?

Veja uma tradução

The pie charts compare the proportion of water utilized for different objectives in six various nations of the world.
Overall, the main purpose of people using water in North america and Europe is for industrial use but in other nations it is used for agricultural purposes the most.
Half of water utilized in North america and Europe for industrial use. By comparison, the percentage of water for agriculture and domestic needs are nearly the same around 35% and 15% respectively. In South america, the figure shows that water is mostly utilized for agriculture. Over two thirds of water used in this area of the world is for agricultural purposes with just 19% being used for domestic needs and 10% for industrial uses.
In Africa, Central Asia and south east Asia, most people use water for agriculture, taking up just over 80% of all water used. It is 10% lower compared to other purposes.

I hope this helps, It sounded really good nice job! I wasn't sure what you meant exactly in the last sentence though, I just corrected grammar.