Flood alerts for well owners
Active flood warnings, watches and advisories from the National Weather Service for every US state, updated automatically every few minutes. If floodwater reached your well, don't drink the water until it's disinfected and tested.
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Warning flooding happening or imminent · Watch flooding possible · Advisory minor flooding · Boil water news report
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What to do if your well flooded
- Don't drink it. Use bottled water, or boil water at a rolling boil for 1 minute, until a lab says it's safe.
- Keep the pump off until it's checked. Submerged wiring is a shock hazard — call an electrician or well contractor.
- Disinfect (shock-chlorinate) the well using CDC's steps or your state's instructions, then flush until the chlorine smell is gone.
- Test at a certified lab for total coliform and E. coli (and nitrate near farms or septic) about 7–10 days after disinfecting. Find a lab by state.
- Retest 1–2 weeks later and check your septic system — see EPA: your private well after a flood.
Find a certified lab Flood season testing Flood protection guide Bacteria after a flood
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Alerts come from the National Weather Service public API (api.weather.gov); boil-water items are news reports found by search — there is no national real-time boil-water feed, so check your local health department. This page is not an official warning service.