Environmental Protection Agency
EPA
The federal regulatory system, the EPA, oversees, but does not establish
standards or testing protocol for drinking water treatment devices.
Instead, they refer consumers seeking assistance in
evaluating water treatment devices to NSF International.
NSF is a non-profit organization that is devoted to developing and
administering programs related to public health.
NSF's standards and criteria are used internationally
for consumer products and services, including drinking water treatment
units.
Widely recognized by public health officials as a
credible, third-party certifier, NSF International's standards provide
assurance to the consumer that the drinking water treatment devices
certified by NSF will perform in accordance with the claims made by the
manufacturer.
Some states, but not all at this time, have established
certification or registration requirements for drinking water treatment
devices for which health claims are made.
To date, the States of California, Colorado, Iowa,
Massachusetts, and Wisconsin have established some form of regulation for
the point-of-use water treatment industry, and other states are soon to
follow.
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