The Price of Tap Water

Tap water usually costs far less than bottled water, but a ratio of exactly 1,740 to 1 depends on the water tariff and the price of a particular bottle. For example, a water-conservation plan from Lehi, Utah, gives this comparison: the cost of a 99-cent bottle could pay for 1,740 half-liter refills from the tap. That is a local price comparison, not a universal ratio.