| http://www.w3.org/ns/prov#value | - Despite modern water purification means, the general population is at risk, and in particular infants and persons with compromised immune systems are at considerable risk.In the U.S. and other developed countries, municipally treated water typically includes one or more of the following impurities: suspended solids, bacteria, parasites, viruses, organic matter, heavy metals, and chlorine.
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