You can now text 911 if you have an emergency but there’s no guarantee that your local Public Safety Answering Points (PSAP) will answer.

The Federal Communications Commission (FCC) is rolling out the text 911 initiative in order to create another method of reporting emergencies. This applies to users of AT&T (T), T-Mobile(TMUS), Verizon (VZ), and Sprint (S) phones.

However, there is one major drawback to the text 911 plan–not all PSAPs are accepting emergency texts at the moment. If you text the number reporting an emergency, there is a possibility that they might respond but you won’t know for sure unless you are positive that your local PSAP accepts emergency texts.

The FCC has created a PDF file that shows what PSAPs are currently accepting 911 texts.