The ability to place rain barrels for waterstorage makes it possible for inhabitants to create water storage on a small scale but can make a big difference for this stakeholder group. At this moment there is an option for rain barrels available in the example upgrades but it would be preferred to have it available as an action as well. This makes it easier to apply in the project.
Update:
This idea has received the status already available in the Platform. For more information on how to apply the rain barrels please check this How To:
https://previewsupport.tygron.com/wiki/How_to_add_rain_barrels_to_your_project