the rooftop, these are intended to allow visitors to observe activity inside the plant’s filtration facilities, which process approximately 15,000 cubic metres of wastewater every day. The central corridor is complete with a small creek, embedded into a small garden that also runs the length of the building, which was designed to demonstrate how natural foliage can filter groundwater, offering “contrast to the industrial presence of the water treatment plant, prompting reflection on the function and environmental footprint of the public utility”.