SS 577

Water Efficiency Management System


PUB, together with SPRING Singapore and industry stakeholders, have developed a national standard Singapore Standard SS 577:2012 on water efficiency management systems. The Standard includes a set of framework and guidelines as well as suggested tools and best practices for water users to adopt and improve on their water usage and efficiency.

It specifies requirements applicable to water usage, including monitoring, measurement, documentation and reporting, design and procurement practices for equipment, systems, processes and personnel that contribute to water efficiency. The standard facilitates organisations in preparing their Water Efficiency Management Plan (WEMP).

PUB has also worked with the Singapore Accreditation Council (SAC) to develop a programme to accredit certification bodies to certify water users meeting the SS 577. Organisations are encouraged to adopt SS 577 and apply for certification. They can apply for funding under PUB’s Water Efficiency Fund (WEF).

In order to encourage the adoption of the standard, PUB has in place initiatives and incentives under the 10 per cent Challenge programme in the form of funding, the Water Efficiency Fund (WEF) and recognition through Water Efficiency Building (WEB) Gold and Silver certification. The WEF is a co-funding scheme where funds will be provided to help companies to monitor and improve their water usage, and develop their WEMPs. As for the WEB certification, in order to be certified as a Gold Certification Water user, the water user will have to be certified against the Singapore Standard SS 577:2012 by a certification body accredited by the Singapore Accreditation Council.


  • Adopt a systematic approach to manage water efficiency.

  • Achieve water savings and reduce operational costs.

  • Assist in development & reporting of Water Efficiency Management Plan (WEMP).

  • Opportunity to gain PUB’s Water Efficiency Building (WEB) Gold certification.

  • Increase stakeholder assurance on water issues.

  • Enhance image as a green sustainability corporate organization.

PUB is offering a Water Efficiency grant to help defray the costs of setting up the system. PUB will co-fund 50% of the total costs for certification (consultancy cost and 1st year certification audit cost for SS 577:2012) under Feasibility Study Project, subject to a cap of $10,000 (for premises with monthly water consumption of 1,000 cu m or less, the funding cap will be $5,000).



Contact Our Specialist - If you have a specific query about certification or training or would just like to explore how management standards can help your organization. For an immediate response, use the chat options. 

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