The given pie charts illustrate how residential water was used for different purposes in the years 1988 and 2008.
Overall, the most notable changes over the 20-year period were the sharp decline in water usage for gardening and the significant increase in the proportion used in the kitchen and bathroom.
In 1988, the largest share of water, accounting for 25%, was used for washing, followed closely by the bathroom at 22%. Water consumption for gardening stood at 20%, while toilets and the kitchen accounted for 18% and 15%, respectively.
By 2008, bathroom use had increased considerably to 28%, becoming the largest single category. The kitchen also experienced a significant rise, from 15% to 29%, which represented the biggest growth among all categories. On the other hand, garden usage dropped dramatically from 20% to just 7%, and water used for toilets fell slightly to 14%. Meanwhile, washing decreased marginally by 3%, from 25% to 22%.