Lead in water   The competition between political parties rushing to test for tainted tap water descended into another fight yesterday in the run-up to the district council elections in November.

A number of Hong Kong’s housing estates found themselves at the centre of a tainted water scandal after tests commissioned by the Democratic Party in June 2015 showed that samples taken from tap water in Kai Ching Estate in Kowloon City contained amounts of lead exceeding WHO standards. Subsequent tests by the government showed water samples from at least two other public estates, in Kwai Chung and Sha Tin, also contained excessive lead.