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Drinking Water Testing Services

Water supplied by the Hong Kong Water Supplies Department is amongst the safest drinking water in the world. However, poor maintenance of the drinking water plumbing system may deteriorate the quality of tap water. In order to make sure the consumers could enjoy drinking water with good quality, drinking water should be monitored regularly to ensure it complies with the standards.

The table below shows the acceptable limits of the water quality indicators adopted by the “Water Supplies Department Circular Letter No. 5/2023”.

Enviro Labs Ltd. (ELL) is registered as a HOKLAS accredited laboratory (HOKLAS 128) and ALL the parameters listed by the above Scheme are HOKLAS accredited.



1. WSD Circular Letter No. 5/2023

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