These tiny pores let water pass, but restrict the flow of almost anything else. In most cases, R.O. filtration reduces the total dissolved solids in water by 97 percent, according to a safety specialist for Glacier Water Services, Inc., which manufactures water vending machines like the one located outside the door at Abilene's H.E.B. supermarket. Absolutely not, said Linda Simpson, assistant to the director of water utilities for the City of Abilene. The City of Abilene's water is safe. Public system waters are tested for 80 or more specific chemicals, including bacteria and minerals and inorganic compounds.
Bottled water is lower in minerals and salt.
It may taste better, but it's not necessarily safer. Simpson said the additional treatment people get from water at places like the Water Keg is just a matter of personal preference. Plus, bottled water is kind of convenient. Aside from taste, Simpson pointed out that the big difference between tap water and bottled water is cost. We haven't had a water rate increase since 1984 and we're proud of that.