- Greywater recovery for use by Grand Chalon's green spaces and road maintenance departments during heatwaves.

In a context of global warming and extended drought periods, our local authority decided to implement measures through a water plan.
The desired impact is to be able to use a daily volume of water between 10m³ and 15m³ initially.
The Aquatic Center wondered how it could contribute to the water plan, particularly by recovering its daily water consumption so that the water could be used a second time. The idea is to see how to develop this process and increase recovery from other circuits, and perhaps also extend it internally for a third use towards certain water consumptions like foot baths or watering green spaces (trees and lawns). Currently, what limits the recovery to 15m³ of water per day is its storage.
Water use and restrictions during drought periods for green spaces and road maintenance. Where to find water to maintain cleanliness and necessary plant watering.
The discharged water is reused to clean the city, reducing waste and preserving drinking water by optimizing its usage cycle.
Interactive learning to motivate the child, acknowledge their efforts, involve parents, and progress with new engaging content.
The system saved 140,000 m³ and €900,000. The goal is total water autonomy, with optimized quality monitoring via COTmètre.
40% reduction in electricity consumption for lighting, a 1 GWh decrease, and an increase in nighttime and event attendance from 5% to 20%.
Since 2013, every rescue has been a complete success. Since 2019, no major intervention has been necessary, a sign of effective vigilance.