Water Quality Regulations 2025 (Sixth Edition)

This revised version of the Regulations of the Department of Energy (doE) establishes a legal framework for the provision of wholesome water to consumers. They apply to all Licensees, Entities and Consumers who operate or receive wholesome water and should be read together with the Water Supply Regulations and various Codes and other Regulations. The DoE also considers the World Health Organization (WHO) Water Quality Guidelines as the primary reference for the Regulations. The Regulations require water supplied to be wholesome. Water shall be regarded as wholesome if: a) the water does not contain any element, organism or substance (other than a Parameter) at a concentration or value which, alone or in conjunction with any other element, organism or substance it contains would be detrimental to public health; and b) the water complies with the Prescribed Concentrations or Values of the Parameters listed in Tables A to H in Schedule 1. Each licensee must develop a Drinking Water Safety Plan (DWSP). The Regulations are also about monitoring and data collection, the use of chemicals in water, and compliance and enforcement.