An official website of the United States government.

Due to a lapse in appropriations, EPA websites will not be regularly updated. In the event of an environmental emergency imminently threatening the safety of human life or where necessary to protect certain property, the EPA website will be updated with appropriate information. Please note that all information on the EPA website may not be up to date, and transactions and inquiries submitted to the EPA website may not be processed or responded to until appropriations are enacted.

We've made some changes to If the information you are looking for is not here, you may be able to find it on the EPA Web Archive or the January 19, 2017 Web Snapshot.

Ground Water and Drinking Water

Drinking Water Emergency Response

While it rarely occurs, your drinking water may become unsafe to drink because of a natural disaster or high levels of contaminants in the source where your drinking water comes from. If there is a potential problem with your drinking water, whether it’s related to a natural disaster or not, your supplier must notify you. The information below is to help identify some of the issues you may face preparing for, during and after an event that can directly impact your health and the health of your family.

Top of Page