You should spend about 20 minutes on this task.
The chart details the length of different quality water in rivers in England.
Summarise the information by selecting and reporting the main features, and make comparisons where relevant.
Write at least 150 words.
The bar chart shows the length of water that was in good, fair or poor condition each year from 1993 to 2003.
The largest increase given in the graph is from 1993 to 1994, where the amount of good quality water increased by over one third to 18,500 kilometres. A slight increase the following year was followed by a brief decline until 1998, when the length of good water increased from 19,500 kilometres to 24,000 in 2001 and 2002, although this was then followed by a drop of 3,000 km in 2003.
The length of water that was deemed to be fair quality varied between 13,000 kilometres and 8,000, with the first five years being higher each year than the second half five years.
The amount of poor water declined dramatically between 1993 and 1994, with figures falling by 6,000 kilometres, then to 2,000 kilometres for the next two years. There was a slight increase in 1997 and 1998, followed by a gradual decrease until 2002.
Overall, the length of good quality water increased while fair and poor quality both decreased.