The given table illustrates the cost of water in five distinct cities in Australia.
In general, the usage change per kiloliter both above and below 125KL are similar in the two cities: Melbourne and Sydne. Addition to this, the average bill per household to pay the cost of water in Melbourn is the lowest, whereas the figure in Perth is the highest among five cities.
Regarding water usage, the residents in Adelaide and Perth pay the same lowest cost of water for using below 125 kiloliters, at $0.42. However, the cost increases to around $1.00 in Adelaide and $1.50 in Perth whether exceeding 125 kiloliters. Meanwhile, the cost of water in Brisbane only increases from $0.81 to $0.84. The residents in Melbourne and Sydne remained unchange in both two level, at $0.78 and $0.98 respectively.
In term of average bill, each household almost pay more $300 for the cost of water, except Melbourne. Residents in Perth must pay the highest fee, at $332 whereas the average cost of water of per household is the lowest in Melbourne, at $253.