A hospital’s water system has been flushed through after part was found to contain legionella, the bacteria which can cause Legionnaires’ disease.
The bug was discovered at Llandrindod Wells Hospital in Powys following concerns over water quality.
Bottled water was used for washing until the water system was cleaned through on Friday.
Powys Teaching Health Board said there had been no reported cases of anyone being affected by the bacterium so far.
Meanwhile, an outbreak of Legionnaires’ disease is being investigated in Carmarthen after three people needed treatment. The outbreak is believed to centre on Carmarthen, said Public Health Wales.