14 August 2012, Tokyo Electric Power Company (TEPCo) said a new radioactive water leak has been found, coming from Reactor 4.

This morning a worker found a 350 square meter (1,148 square feet) room on the first floor of the reactor building flooded, about one centimeter (0.39 inch) deep.

The water is contaminated with 77,000 becquerels per milliliter of cesium.

TEPCo officials think the water might be coming from a pipe that is transferring contaminated water from Reactor 3 to a storage tank.  The pipe runs next to Reactor 4 building.

Also this morning, workers discovered a fire in a water pump.  The pump is used in a building that is used for filtering contaminated water.  They used fire extinguishers to put out the fire.