I found this on Water Wired:

The EPA is sponsoring a 2-day symposium to discuss newly published and forthcoming information on epidemiology studies related to people who consume drinking water from public systems supplied by groundwater. Renowned speakers will focus on endemic disease and predictive methods. There will also be discussions of pathogen and fecal indicator occurrence and transport – primarily E. coli and Cryptosporidum – in the subsurface.

The meeting will be helad at the Carnegie Institute of Washington, 1530 P St. NW, Washington DC.

You need to register by 25 January 2010. Here are the online agenda and a pdf version: