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The Goa government has made it mandatory for large residential, commercial, industrial, and government buildings to install rooftop rainwater harvesting systems. This move is aimed at improving water conservation and recharging groundwater in the state. The policy applies to residential complexes on plots of 2,000 square metres and above, commercial complexes on 1,500 square metres or more, and industrial units on 10,000 square metres or more. Exemptions are provided for buildings with sewage treatment plants or greywater recycling systems. The initiative also links to the Catch the Rain 2025 campaign for schools and government buildings.
The Goa government has implemented a rule requiring rooftop rainwater harvesting for large buildings to strengthen water conservation and ensure sustainable groundwater recharge. The Water Resources Minister, Subhash Shirodkar, informed the legislative assembly that this mandate applies to substantial residential, commercial, industrial, and government structures across the state. Advertisement
The policy is part of a larger effort that includes post-monsoon water harvesting in rivers, streams, and nullahs, using dams and bunds. Officials have also promoted rainwater harvesting in schools, office complexes, and other institutions, along with constructing rainwater harvesting pits to support groundwater replenishment.
The mandatory requirement is based on the official rainwater harvesting policy notified in the government gazette in December 2022. Residential complexes and apartments on plots of 2,000 square metres and above must include rooftop rainwater harvesting systems. Commercial complexes on plots of 1,500 square metres or more, and industrial units on plots of 10,000 square metres or more, are also covered. All government buildings, including schools and colleges, fall under the rule.
Buildings that already have sewage treatment plants or greywater recycling systems are exempt from installing separate rainwater harvesting structures, acknowledging their existing water-efficient systems.
To further strengthen water sustainability, the government plans to equip most government schools and public buildings with rooftop rainwater harvesting systems under the Catch the Rain 2025 campaign. This initiative aligns with past measures to promote efficient water use and reduce the pressure on natural water resources in Goa.
The policy is expected to encourage developers and institutions to integrate water management into building designs and promote a culture of conservation. Over time, these efforts will contribute to better groundwater levels and more resilient infrastructure.
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