The provided data delineates the fluctuations in water prices across major Australian cities, namely Adelaide, Brisbane, Melbourne, Perth, and Sydney. Overall, it is evident that, with the exception of Melbourne and Sydney, water costs in Adelaide, Brisbane, and Perth exhibit an upward trend when water usage surpasses 125 kiloliters (KL). Notably, Perth stands out with the highest average household bill, while Melbourne records the lowest. Upon closer examination of the table/As can be seen from the table, the costs of water in Adelaide and Perth stabilize at a mere $0.42 for usage under 125KL, representing the most economical rates. However, once consumption exceeds 125KL, these figures escalate to $1.00 for Adelaide and nearly triple to $1.50 for Perth. Similarly, Brisbane displays a corresponding/comparable trend, with water prices rising from $0.81 to $0.84 for residents using water over 125KL. In stark contrast, Melbourne and Sydney maintain a consistent pricing structure at $0.78 and $0.98, respectively, regardless of exceeding 125KL in water consumption. In terms of average household bills, Perth leads with the highest at $332. Adelaide, Brisbane, and Sydney follow closely with3 marginal differences at $312, $310, and $319, respectively. Melbourne reports the lowest average bill per household at $253.