Iraq is one of the countries that is suffering from water shortage problems and, for this reason, wastewater treatment plants
become a necessity to minimize this problem. In this study, the impact of Al-Hilla WWTP (wastewater treatment plant) on the
environment has been studied. This was achieved using SimaPro software package. This software is a powerful tool for analyzing the
environmental impact on products during their whole life cycle. A huge amount of knowledge about the environment is built into the
program and database, enabling to analyze a product with a minimum of specialized knowledge. The results of LCA (life cycle
assessment) showed that the impact and damage on the environment by Al-Hilla WWTP was 41 bad points for each 1 m3 of treated
wastewater. The most environmental impacts potentially were global warming, respiratory inorganics and non-renewable energy. The
study also showed that most of the effects were the result of the use of cement, steel and electricity consumption.
Key words: SimaPro, environmental impact, life cycle assessment, wastewater treatment plant, Al-Hilla.