GreenLED — Alphen aan den Rijn pioneers safe rainwater reuse for urban greening

May 8

Written By lishan Xu

GreenLED in Alphen aan den Rijn

Year: 2023 - Now: construction (2-year monitoring to 2027)
Customer: City of Alphen aan den Rijn
Partners (in NL): TU Delft (monitoring), Aveco de Bondt (engineering), APRIA Systems (UV-LED)
Funding: EU LIFE programme
Locations: Lage Zijde and Hoge Zijde, Alphen aan den Rijn city center
Water use: Irrigation of 50,000 m² of green roofs and facades
Water volume: 15 million liters/year (Alphen aan den Rijn sites)
Part of: EU LIFE GreenLED — 4-year European demonstration project (NL – ES)

Drinking water saved annually and irrigation is supplied by locally collected and treated rainwater.

Reliable irrigation for large-scale green roofs and facades, enabling a cooler, climate-resilient city center.

Naturally treated water, combined with UV-LED disinfection and continuous monitoring, ensures safe use in close-contact urban applications