| Active, not recruiting | N/A | 5000 | Canada | Level of recreational water contact activities, Sand contact at beaches | Toronto Metropolitan University, University of Waterloo, University of Guelph, Health Canada, Public Health Agency of Canada (PHAC), Toronto Public Health, Vancouver Coastal Health, Government of Manitoba, Public Health Niagara Region, McMaster University, Halifax Regional Municipality | Water-Related Diseases, Gastrointestinal Diseases | 09/26 | 03/29 | | |