PERMENPUPR 11/2014: Rainwater Management Requirements for Buildings
Peraturan Menteri Pekerjaan Umum dan Perumahan Rakyat Nomor 11/PRT/M/2014 tentang Pengelolaan Air Hujan pada Bangunan Gedung dan Persilnya ("PERMENPUPR 11/2014") establishes mandatory rainwater management requirements for buildings and their premises. Published in Berita Negara 2014 Nomor 1394, this 15-page regulation addresses urban flooding and water scarcity through decentralized stormwater control.
Regulatory Mandate
Indonesia's rapid urbanization creates dual water challenges: flooding during rainy seasons and scarcity during dry seasons. PERMENPUPR 11/2014 addresses both through rainwater harvesting, infiltration systems, and controlled drainage that reduce peak runoff while recharging groundwater.
Technical Requirements
Harvesting Systems: Buildings must install rainwater collection tanks sized to capture minimum 30% of annual rooftop runoff for non-potable uses (landscaping, toilet flushing, vehicle washing).
Infiltration Wells: Premises must include infiltration wells or pervious surfaces allowing minimum 30% of site area to absorb rainwater, reducing strain on municipal drainage.
Controlled Drainage: Outflow to municipal systems must be regulated through detention ponds or flow restrictors, preventing flash floods.
Building Size Thresholds
Requirements apply to:
- Buildings exceeding 500 m² floor area
- Residential complexes with 20+ units
- Commercial and industrial facilities
Smaller buildings are encouraged but not mandated to implement rainwater management.
Green Building Integration
PERMENPUPR 11/2014 aligns with PERMENPUPR 21/2021 on Green Building Certification, where comprehensive rainwater management earns credits toward certification levels. Developers implementing advanced systems (greywater recycling, green roofs) receive expedited permitting and floor area ratio bonuses.
Conclusion
PERMENPUPR 11/2014 represents proactive urban water management policy, shifting from reactive drainage to integrated water cycle management. By mandating building-level interventions, the regulation distributes flood mitigation responsibilities while creating water supply buffers for drought resilience.
Sumber Hukum: PERMENPUPR 11/2014 di BPK
Peraturan Terkait: PERMENPUPR 21/2021, PP 16/2021
Sektor: Green Building, Stormwater Management
Status Regulasi: Aktif
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