Water pollution from heavy metals is one of the most impactful problems, both for the environment and for human health. There are multiple reasons: industrial and urban discharges, agricultural waste, runoff from roads and roofs, illegal landfills, etc. On the other hand, we have another issue: a big amount of construction waste is thrown away every year. Brickology is a project that involves the use of brick waste to purify water and soil from polluting heavy metals. This adsorbent material has been characterized through instrumental analytical techniques such as X-Ray Diffraction, IR Spectrophotometry, Dynamic Light Scattering and Cryogenic Porosimetry thanks to collaboration with DISIT, Department of Sciences and Technological Innovation, of UPO in Alessandria. In the laboratories of our Institute, we conducted surface adsorption tests using this construction waste material against some of the main critical metals: copper, nickel, chromium and cobalt. The results obtained through UV-Vis spectrophotometry and Atomic Absorption Spectroscopy proved to be particularly interesting, as they demonstrated the high adsorption capacity of the material that has been used. This property was compared with that of kaolin, a clay present in the composition of brick waste, which is also widely used in agriculture as a protective substance against numerous plant diseases and to mitigate the effects of excessive heat and UV radiation. Lastly, competitive adsorption selectivity in a multicomponent heavy metal system (copper, nickel and chromium) was performed. Brickology is a solution to two problems: construction waste management and heavy metal contaminated water.