In the future, text-to-911 will be widely available in the United States. However, for now, the ability to contact 911 using text is only available on a limited basis in a few markets. For this reason, you should not rely on text to reach 911.
On January 30, 2014, the Commission adopted a Policy Statement and 2nd FNPRM stating the goal that all wireless telephone companies and providers of interconnected text messaging services should enable consumers to send text messages to 911. The Commission encouraged industry-developed solutions to achieve this goal, and proposed rules that would require all covered text providers to support text-to-911 by December 31, 2014. (See also: Best Practices for Implementing Text-to-911: www.fcc.gov/encyclopedia/best-practices-implementing-text-911.)