Holiday Schedule for Private Citizen Drinking Water Sample Drop-off. Plan ahead to ensure your water sample will get tested prior to the holiday. For this location the final drop off is December 16, 2025 by 4 pm. Private citizen drinking water samples will not be accepted on the following days: December 23 and December 30 2025. Note: samples must be tested within 48 hours of collection in order to ensure sample integrity. If you have concerns about your water quality, contact your local public health unit. https://www.phdapps.health.gov.on.ca/phulocator