The modern world's increasingly developed industries have significantly polluted the planet on which we live. The water resources, on which human existence depends, are being gravely compromised and degraded due to pollution. Currently, it is imperative that we address the issue of water pollution. In the process of treating water, new materials are constantly being used in an effort to achieve sustainable development. Biochar material is one of them. During the thermochemical method, biofuel generates a by-product known as coke or biochar through the breakdown of the biofuel source. With its affordability and expansive specific surface area this substance offers numerous advantages and uses in catalysis, fuel cell technology, adsorption, enhancing soil quality, along with a significant potential for widespread application. As a result, biochar has emerged as a method for increasing thermochemical processes' efficiency and monetary benefits in water treatment. This summary initially covers the techniques utilized in producing novel biomass materials. It then organizes and evaluates various approaches to modifying them before delving into the possible utilization of biochar substances in addressing wastewater concerns. Water treatment, bio-char, adsorption, sustainable development, biomass