Microbiological indicators of water quality in the Xochimilco canals, Mexico City.

Objective: To quantify microbiology indicators of fecal contamination in the effluents of two waste water treatment plants and in samples collected in several canals in Xochimilco.

Material And Methods: A cross sectional study was performed. Ten sites, 5 from plant effluents and 5 from canals, were selected for sampling during November and December 2001.