The Delhi government has made rainwater harvesting (RWH) mandatory for all residential, commercial, and institutional properties

measuring 100 square metres or more, aiming to tackle groundwater depletion and recurring summer water shortages.The decision was taken during a high-level meeting chaired by Water Minister Parvesh Verma at the Delhi Secretariat on April 20, 2026. Officials from over 60 departments and central agencies discussed enforcement strategies, timelines, and incentives ahead of the monsoon season.Highlighting the issue, Verma said Delhi receives sufficient rainfall for nearly four months annually, but much of it goes to waste through drains. He stressed that effective harvesting systems could recharge groundwater and ease water scarcity.The Delhi Jal Board has been designated as the nodal agency for implementation, monitoring, and financial support. Subsidies include up to ₹25,000 for plots between 100 and 499.99 sqm, and up to ₹50,000 for larger plots. A 10% rebate on water bills will be offered for functional systems, rising to 15% if wastewater recycling is also adopted.Non-compliance will lead to penalties such as higher water bills, withdrawal of incentives, inspections, and possible disconnection of supply. Authorities will also introduce annual self-certification of RWH systems.The move supports the Centre’s Catch the Rain initiative.