Three Mile Island

The Three Mile Island Nuclear Generating Station is approximately 10 miles SSE of Harrisburg Pennsylvania, United States. Most commonly it is reported to be in Middletown (since Middletown is the mailing address), but it is actually in Londonderry Township on the beautiful Susquehanna River.


About Three Mile Island Alert

Three Mile Island Alert is a non-profit citizens' organization dedicated to the promotion of safe-energy alternatives to nuclear power and is especially critical of the Three Mile Island nuclear plant.

Formed in 1977 (two years before the accident) TMIA is the largest and oldest nuclear watchdog group in central Pennsylvania.

We have been provided testimony to the US Senate, the US Nuclear Regulatory Commission, the Pennsylvania House of Representatives, the Pennsylvania Public Utility Commission and have received certificates of commendation from several governmental bodies.

Contact us at:
Three Mile Island Alert, Inc.
315 Peffer St.
Harrisburg, PA 17102
Telephone: 717-233-7897

TMIA members who are interested in specific aspects of nuclear power are encouraged to join one of our special committees.
  • Radiation Monitoring
  • Low-level Radioactive Waste
  • Health Effects from TMI
  • Safety Issues
  • Nuclear Plant Security

A Record of Diligence...

And a Record of Achievement...

The Devil Made Three Mile Island (song)