Zebra Mussels Found in 80% of Water Facilities

From July 28, 1992 (update #14)

URBANA, Ill. - Twenty of 24 Lake Michigan water users in Illinois and Indiana have sighted zebra mussels at their facilities, according to a survey conducted by the Illinois-Indiana Sea Grant Program in late 1991. Eighty percent of the sightings resulted from monitoring programs; the same proportion of respondents monitor for zebra mussels at least monthly. According to the survey, 50% of the facilities reporting colonization by zebra mussels had implemented control programs. Two-thirds are using some form of chlorination, with the other third using another chemical or thermal treatment.

ID: 19920728-10.

The Zebra Mussel Update was a 4- to 8-page quarterly national newsletter published by the University of Wisconsin Sea Grant Institute from May 1990 through May 1997. The ZMU documented the spread of the zebra mussel -- an exotic nuisance mussel -- through North America's freshwater environments, especially the Great Lakes, and on efforts to control it.