The industrial processing of zinc generates large quantities of jarosite, a hazardous by-product classified as toxic due toits heavy metal content and acidic nature. Improper disposal of jarosite poses significant environmental and health risks. This studyinvestigates the potential of utilizing jarosite waste as a sustainable construction material in civil engineering applications.Laboratory experiments were conducted to evaluate the physical, chemical, and mechanical properties of jarosite when blended withother construction materials such as cement, sand, and fly ash. Results indicate that, with proper treatment and proportioning,jarosite can partially replace conventional materials in concrete and bricks without compromising structural integrity. The studyhighlights the environmental and economic benefits of reusing jarosite, promoting a circular economy approach in the constructionindustry. However, further large-scale field validations are necessary to assess its long-term performance under realKeywords: Jarosite waste, Hazardous material, Sustainable construction, Waste utilization, Civil engineering materials, Industrialby-product, Circular economy, Eco-friendly concrete, Waste valorization, Environmental management