Efficacy of AquaStar Plus!™ UV-C Water Treatment System
(or AquaStar TM)
product of Meridian Design, Inc.
Meridian Design, Inc.
July 29, 2005.
EPA Business Number: 82431
The basis for this document is the Meridian Design, Inc. submission to the EPA. We requested that they review
our “claims” and other substantiating references on the viability and efficacy of the AquaStar Plus!™ UV-C
Water Treatment System and UV-C treatment in general. This document incorporates the EPA's input and is
based upon industry research and testing performed at the request of Meridian Design, Inc.
Source Information on UV-C Efficacy
We have found that few people, especially outside of the water quality industry, are aware of much of the body
of recent research demonstrating that UV-C is excellent at reducing pathogens. In fact it is superior in many
ways to other methods of water treatment; for instance, it is now accepted as being highly effective at treating
Cryptosporidium and Giardia. Confirmation of this fact is in recent EPA papers. 2, 3, 4, 6
We have included footnotes throughout so that our statements about UV-C can be verified. Most of them are in
reference to the EPA's literature, and much of that is summarized in a single EPA document. That is, the
“Ultraviolet Disinfection Guidance Manual ” dated June 2003 “Draft”. It can be found on the EPA website at:
>>Ultraviolet Disinfection Guidance Manual
This EPA Guidance Manual is intended “...to provide technical information on the application of ultraviolet
light for the disinfection of drinking water by public water systems.” This document is one of the most recent
collections of research and explanation on the subject of using UV-C for water treatment and is highly
enlightened on the subject. The Guidance Manual is intended as advice to municipalities so in many ways it is
not directly relevant to a portable system, but much work was put into th