Water supply at a Haneda Airport terminal in Tokyo has been stopped.
Japan Airport Terminal, the firm operating Haneda's terminal buildings, received complaints at around 9 a.m. on Wednesday that tap water tasted salty at Terminal 1 and Terminal 2 for domestic flights.
The company says it responded by stopping the water supply to check water quality.
The company resumed water supply for Terminal 1 by 11 a.m., after finding no problems with the water. But the stoppage continues at Terminal 2. That has left restaurants there closed, and tap water at washbasins in restrooms unavailable.
The international flight terminal had no water problems.
The transport ministry's office at Haneda Airport says there has been no impact on flights to and from the airport.
Japan Airport Terminal is working for full recovery and trying to determine what caused the problem.