Yes, rainwater collection is legal in the Philippines, but compliance with national and local regulations is mandatory. The Department of Environment and Natural Resources (DENR) and local government units (LGUs) impose restrictions to prevent water source contamination and unauthorized extraction. Recent 2026 amendments to the Clean Water Act emphasize stricter monitoring of non-potable water systems, requiring permits for large-scale or commercial use.
Key Regulations for Rainwater Collection in Philippines
- DENR Administrative Order No. 2016-08 mandates permits for rainwater harvesting systems exceeding 10 cubic meters, aligning with the Clean Water Act’s pollution control standards. Non-compliance risks fines up to ₱500,000 or imprisonment under Republic Act No. 9275.
- Local Government Units (LGUs) may impose additional ordinances, such as mandatory filtration requirements in Metro Manila LGUs (e.g., Quezon City Ordinance No. SP-2885) to prevent mosquito breeding in stored water.
- National Building Code (PD 1096) requires rainwater collection systems in new constructions to integrate with approved drainage and storage designs, subject to structural safety inspections by the Department of Public Works and Highways (DPWH).