SINGAPORE - Professional engineer Ying Kee Yeow was fined $4,000 on Tuesday (June 14) for failing to supervise water service installation works at an industrial building in Senang Crescent.

PUB said in a release on Wednesday (June 15) that it did a site investigation at Bizhub at Senang Crescent on Dec 15 last year, and found that sanitary pipes were installed above the low level water tank in the building's basement. The tank's required sampling taps were also not installed.

Both are infringements of the code of practices for water services.

Installing non-potable water pipes above potable water pipes or water tanks compromises the safety of drinking water and can lead to contamination, the PUB said. Failing to supervise the proper installation is a serious offence.

For the offence, Ying could have been fined $10,000, jailed for up to 12 months or both.

It is his fourth offence, PUB said.

On April 26, he was charged and fined $2,000 for failing to supervise water service works at a dormitory in Lorong Lada Hitam. Potable water pipes were found installed beneath sanitary pipes in the dormitory toilets.

In November last year, he was given a stern warning for failing to comply with water tank security requirements for a residential development.

However, in January this year, he committed a similar offence by failing to install stainless steel brackets for the covers of low level tanks, and sampling taps for the tanks at another residential development.

He was issued with a notice of offence from PUB and offered to compound the offence for a composition sum of $500.

The licensed plumber who carried out the works at Senang Crescent was suspended for six months.