The bar chart compares the amount of water used in the US for household, industrial and agricultural purposes for three different time periods: 2000, 2005 and 2010.（首先点明所描述的表格类型以及题目）
Use of water for domestic purposes increased slightly over the ten-year period, from about 5000 litres of water in 2000 to 6500 in 2010. At the same time, growth was very steady, exactly 500 liters every five years.（由于时间原因，描述图表的时候关注极值和趋势）
Industrial use also increased over this period and the most dramatic growth was from 2005 to 2010, when it rose by 3000 litres. In fact, industrial use was much higher than either agricultural or domestic use. For instance, in 2005 industrial use, which was 12,000 litres, was almost as high as agricultural and domestic use put together, and in 2010 it was more. While 15,000 litres of water went to industry in that year, only 11,000 litres were used for other purposes.
By contrast, agricultural use decreased slightly and steadily, at 500 litres per 5 year period. 7000 litres of water went to farming in 2000, whereas only 6000 litres were used in 2010. In fact, the amount of water used for agriculture dropped lower than that used for households in 2010, even though it had been higher before that.
Overall, usage of water in the US is increasing from about 20,000 litres in 2000 to almost 30,000 litres in 2010.
该小作文在用词方面比较多变，比如“增加”，考生用了"incereased", "rose", "growth", 用"decreased"和"dropped"来表示减少。善于用副词，如"decreased slightly and steadily"，"exactly"等。