Active Message

Water main break
June 20, 2026, 1:09 p.m.

The water main break incident has been stabilized and all roads have reopened. Work crews remain on scene for cleanup and repairs. Please use caution in the area and allow emergency personnel room to work.


For a campus map, visit https://whereis.mit.edu.

Quick Emergency Response Actions.

Alert History

Water main break— June 20, 2026, 9:33 a.m.
Due to a water main break at Main Street and Vassar Street, the road closure has been expanded to cover two blocks. The affected streets are:

  • Main Street
  • Vassar Street
  • Galileo Way
  • Technology Square
  • Ames Street

There is flooding in the area and emergency responders are on scene. Please stay clear of the area.
For a campus map, visit https://whereis.mit.edu
.

Water main break— June 20, 2026, 8:18 a.m.
A water main break at Main Street and Vassar Street is affecting traffic in the area. The intersection is flooded and emergency responders are on scene. Please stay clear of the area.
For a campus map, visit https://whereis.mit.edu
.

Emergency Contacts

MIT phone:
100
Any phone:
MIT phone:
3-4481
Any phone:
Any phone:
911
additional contact numbers

About this Page

When an emergency occurs that could threaten the safety of the MIT community or negatively impact Institute operations, this page may be used to provide important information about the incident. This page is owned and maintained by MIT Emergency Management.

Quick Emergency Response Actions

Evacuate

An unsafe situation inside a building or area:

  • Proceed safely to the nearest exit (do not use elevators).
  • If it is safe to do so, assist persons who are unable to leave on their own.
  • Evacuate the building and stay clear of the area
  • Await further instructions or the "all clear" before returning to the building or area.
Examples:
Fire, chemical spill (indoors), gas leak, flooding

Shelter-in-place

If an unsafe situation occurs outside of your building:

  • Move to an interior space.
  • For severe weather, move to the lowest floor possible.
  • If it is safe to do so, assist persons who are unable to shelter on their own.
  • For earthquakes, shelter indoors and duck, cover, and hold on.
  • Remain sheltered until you receive "all clear."
Examples: Severe weather, tornado, chemical spill (outdoor)

Run, Hide, Fight

If there is a person with a firearm or weapon:

  • RUN, if you are able and it is safe to do so. Get away from the area.
  • If you can't RUN away, HIDE. Close, lock, and barricade all doors. Turn off lights and silence electronics, including cell phones. Remain out of sight and stay silent.
  • If you can't RUN or HIDE and you are in imminent danger, as a last resort option, attempt to FIGHT the intruder. Using improvised weapons, act with physical aggression to incapacitate the attacker.

For incident specific response actions, see the Emergency Response Guide

MIT Alert

The MIT Alert system sends messages to the MIT community informing them about a confirmed emergency and to provide suggested protection actions.

All students and employees are automatically signed up for MIT Alert. In addition, extended community members can sign up for MIT Alert as well.

To find out more, including how to customize your profile or remove yourself, please visit the MIT Alert system page or contact MIT Emergency Management at 617-452-4368 or em-staff@mit.edu.