Latest Version

• Technical Requirements for Plumbing Works in Buildings (Jan 2025)
• Figures (Jan 2025)
• Amendment Table for Jan 2025 Version
• Enhanced Technical Requirements for GA 2.0

Previous Version

(Dec 2021)

• Technical Requirements for Plumbing Works in Buildings (Dec 2021)
• Figures (Dec 2021)
• Amendment Table for Dec 2021 Version

(Nov 2020)

• Technical Requirements for Plumbing Works in Buildings (Nov 2020)
• Figures (Nov 2020)
• Amendment Table for Nov 2020 Version

(Oct 2019)

• Technical Requirements for Plumbing Works in Buildings (Oct 2019)
• Figures (Oct 2019)
• Amendment Table for Oct 2019 Version

(Aug 2018)

• Technical Requirements for Plumbing Works in Buildings (Aug 2018)
• Figures (Aug 2018)
• Table showing the references of the requirements

Note: Unless otherwise specified, the Technical Requirements for Plumbing Works in Buildings will be effective for all new applications (Form WWO 542) submitted on or after 1 October 2018. Please refer to WSD Circular Letter No. 4/2018 for details.