Rainwater harvesting

Urban Farm DB summary

Rainwater harvesting (RWH) is a long-standing technique for collecting rainwater from roofs and other surfaces into tanks or reservoirs, used worldwide for water supply in water-scarce areas, flood mitigation, and cost savings. Frankfurt Airport's system saves about 1 million cubic meters of water per year, Mumbai has mandated RWH infrastructure for new buildings above certain sizes since 2002, and typical UK households can reduce water use by 20-30% through RWH.

Only numbers and their conditions are stored, as structured data — never the source's own sentences. Metric and condition names stay in English, as coded.

• 1,000,000 m3_per_year

  annual water saved(rainwater harvesting)

  Water

  region

  Germany

  year

  1993

  method

  Frankfurt Airport rainwater harvesting system

• 20–30 %↓ Decrease

  water use reduction(household water use)

  WaterControl: household without rainwater harvesting

  region

  United Kingdom

  year

  null

  method

  typical household RWH adoption

• 40 %

  population reliant on rainwater(rural water dependence)

  Water

  region

  Thailand

  year

  null

  method

  rural population estimate

Direction of conclusions

Each author conclusion is recorded only as a coded direction per topic. Read the original for the conclusion itself.

• Water useSupportsWith caveats