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Successful UV Disinfection - Lahontan National Fish Hatchery


Our diverse clientele range from hobbyists to regulated facilities. At any given time EA is
involved with specifying UV equipment for
customer applications; many requiring
extremely detailed technical support. Here
is but one example of utilizing our technical expertise to achieve successful UV disinfection.

In 2002 the United States Fish & Wildlife Service issued authorization for a design build project for
the installation of a UV disinfection system to control disease at the Lahontan National Fish Hatchery Complex. This project was initiated to combat disease (Ich and Furunculosis) as well
as to increase production. EA (working with
Water Management Technologies) was awarded
the task of designing and manufacturing this UV equipment.

This project was unique because it involved the recovery of the threatened Lahontan cutthroat
trout (Onchorynchus clarkihenshawi) and the endangered cui-ui (Chasmistes cujus). This
project demanded attention to detail with ac-
curate design, manufacturing and operating
criteria being extremely critical. After installation
of our UV equipment, there was a fish production gain of + 214%. Additionally, the hatchery was awarded “Disease Free Hatchery Status”. The
result proved the value of UV design and flow rate accuracy. Today, successful UV disinfection continues at the Lahontan facility.

Lahontan National Fish Hatchery.
Lahontan Cutthroat Trout.
Emperor Aquatics, Inc. Open-Channel UV System.