Barry Ward (Dún Laoghaire, Fine Gael)
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975. To ask the Minister for Housing, Planning, and Local Government if he will give consideration to implementing mandatory parallel domestic water systems (blue-grey-brown) in new builds, to reduce demands for treated water in domestic settings; and if he will make a statement on the matter. [12793/25]

James Browne (Wexford, Fianna Fail)
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Promoting the efficient and sustainable use of water is a central component of effective water policy. The Water Services Policy Statement 2024-2030 sets out the range of policy objectives across the key thematic areas of quality, conservation and future proofing that will be pursued between now and 2030.

While water sustainability systems (e.g. rain water recovery systems, grey water usage, etc.) are not mandatory, they are being used increasingly in homes and buildings, and my Department has ensured that appropriate standards are referenced under Part H – Drainage and Waste Water Disposal – of the Building Regulations and the accompanying Technical Guidance Document H 2010. My Department also publishes design guidance for local authorities - Quality Housing for Sustainable Communities – which emphasises environmental sustainability and resource efficiency. The influence of this guidance extends beyond social housing provision to provide an important reference point in promoting sustainability issues generally.