Over the past several years, many water utilities have begun to
consider offering or recommending point-of-use (POU) water
treatment devices to their customers. Before making any decisions,
however, it is important for utility managers to understand
the design and certification processes behind these POU devices.
As the final barrier before consumption, properly designed and
operated POU/point-of-entry systems are useful in protecting
public health. This article provides insights into the design of
carbon block filters and shows that the performance of POU
devices can be explained by using sound scientific testing protocols.
This could in turn lead to the development of improved POU
products and help build confidence among POU users that the
products are engineered and designed on the basis of sound scientific principles. Includes 26 references, table, figures.