TABLE 2.

Giardia isolates from nonoutbreak surface drinking water in BC summarized by assemblage

Surface water site (no. of isolates) and collection date(s)	Assemblage (no. of isolates)
Mission Creek intake (10)
September 1990	B (1)
May, December 1991	B (2)
April, July 1992	B (2)
September 1992	A (1)
October 1992	B (1)
November 1992	A (1)
September 1993 (2)	B (2)
Mission Creek settling pond (7)
August, September 1992	B (3)
August, September 1993	B (3)
October 1993	B (1)
Elk Creek (1), May 1994	A (1)
Muskwa River (1), February 1991	B (1)
South Thompson River (1), April 1991	B (1)
Deep Creek (2), April 1991	B (2)