The article discusses how studying the water footprint of construction products can help make construction more eco-friendly. Researchers created a model to calculate water footprints, focusing on blue water (from surface or groundwater) and grey water (contaminated water) in the construction process. They found that grey water footprint was the main concern. By collecting data on water usage in construction, they showed how to manage water footprints in building materials effectively. This research offers a practical way to measure and improve the environmental impact of construction products.