Water Quality Warnings in United States

Water Quality Warnings for United States (Northern America) come from National Weather Service (NWS), Federal Emergency Management Agency (FEMA), USGS Earthquake Hazards Program, National Tsunami Warning Center (NOAA). This page explains what these warnings mean, which authority publishes them, and how to check the current status for Washington, D.C..

Check live drinking status for Washington, D.C.Browse all warnings

At a glance

countryUnited States · North America
reference cityWashington, D.C. (38.9, -77.04)
emergencyPrimary emergency number911
risk profilestorm, flood, heat, cold, drought, wildfire, air, earthquake, volcano, tsunami, radiation

What counts as a water quality warnings

Water quality warnings include boil-water notices, bathing bans and advisories for lakes, rivers and coasts after contamination or heavy rain. They are issued by water utilities and environment agencies, and are usually limited to a specific supply zone or beach section.

Who issues water quality warnings in United States

meteoNational Weather Service (NWS)
civilFederal Emergency Management Agency (FEMA)
seismicUSGS Earthquake Hazards Program
marineNational Tsunami Warning Center (NOAA)

Warning levels, colours and terminology are set nationally. Always read the warning text of the issuing authority: it names the affected districts, the expected time window and the recommended action.

If a warning is active in United States

Boil water for at least one minute, or use bottled water, during a boil-water notice.
Respect bathing bans - they follow measurements, not appearance.
Do not swim for 24-48 hours after heavy rain near storm overflows.

Where the data comes from

Waarning reads public, key-free sources for United States: national water utilities, environment agencies, EEA bathing water data, WHO. Measurements and official warnings are shown separately, and official warnings always keep the name of the authority that issued them.

Frequently asked questions

Who issues water quality warnings in United States?

National Weather Service (NWS), Federal Emergency Management Agency (FEMA), USGS Earthquake Hazards Program, National Tsunami Warning Center (NOAA). Waarning does not issue warnings; it aggregates the public feeds of these bodies and links back to the original source.

What is the emergency number in United States?

The primary emergency number is 911. Use it for a life-threatening situation; for non-urgent reports use the local police station number.

Does Waarning show live water quality warnings for United States?

Yes. The dashboard loads the current values for Washington, D.C. from national water utilities, environment agencies, EEA bathing water data, WHO. You can open it with one click and the location is already set.

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Generated 2026-10-14. Waarning is not an official warning service; in an emergency follow local authorities and emergency services.