The Water Supplies Department has found samples of water taken from two wall-mounted kettles to have lead content exceeding the World Health Organisation standard.
It recently tested 223 water samples from 110 kindergartens. The remainder of the samples passed the standard.
The department has further tested drinking water samples taken from the inlets of the two concerned kettles and results showed that while they met the WHO standard, lead was found in the welding joints of some parts.
Investigations are on-going to see whether any other parts contain lead.
The department advised the public choose products with international certification, such as those certified by WaterMark of Australia or the UK Water Regulations Advisory Scheme.
It reminded people to clean new wall-mounted kettles thoroughly before use and on a regular basis. Stored water inside the kettles should be drained away each day before use.
People concerned about the lead content in the drinking water inside their wall-mounted kettles can ask an accredited laboratory to take samples for testing.