Water alerts map for well owners
Official flood, hurricane and fire alerts that can affect private wells, by US state and Canadian province. Tap or hover over a state to see each alert, who issued it, when, and a link to the official notice and to certified labs nearby.
Red: official warningAmber: watch or advisoryGray: info / none
Live from official feeds, as of loading…. Expired alerts are hidden. If the feeds can't be reached, the map stays gray.
Canada
United States
All active alerts
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Why well owners watch these alerts
Floodwater can carry bacteria, nitrate and chemicals into a private well, especially through a damaged or buried well cap. EPA says not to drink well water after flooding until it has been tested. Wildfires can damage well equipment and plastic plumbing. See bacteria testing after a flood, well water after a disaster and flood alerts.
Questions
Where do these alerts come from?
US alerts come live from the National Weather Service public alerts feed (api.weather.gov). Canadian alerts come from Environment and Climate Change Canada (api.weather.gc.ca). We show flood, hurricane, tropical storm, storm surge, heavy rainfall and fire weather alerts, because these can affect private wells.
What do the colors mean?
Red: an official warning is active (for example a flood warning). Amber: an official watch or advisory. Gray: information only, or no matching alert. Expired alerts are hidden, and every alert shows when it was issued and links to the official notice.
Does the map show boil-water notices?
No. There is no national machine-readable feed for boil-water notices in the US or Canada. Check your local or state health department, or your provincial health authority.
My area has a flood warning. What should I do about my well?
Follow the official notice. After floodwater reaches a well, EPA advises testing for bacteria before drinking the water again. Use the lab finder link for your state or province to find a certified lab.
Does this replace official alerts?
No. This page is a convenience view of official feeds. Always rely on the official notice and local authorities.