Abstract <p>Polymeric biodegradation affects the integrity of polyethylene (PE) pipes used for gas distribution. This study evaluates the impact of fungal attack by soil microorganisms on medium-density PE80 pipes. Samples were subjected to visual, chemical, and mechanical tests before and after exposure in a bioreactor for 2 and 4 months under conditions conducive to fungal growth. While no visible changes were observed, chemical and mechanical properties showed significant degradation, with mechanical alterations being most pronounced due to mass loss. These findings highlight the risk posed by prolonged fungal exposure to pipeline performance. Further research is recommended to explore long-term effects and the potential for controlled fungal degradation as a strategy to mitigate polyethylene waste pollution.</p> Graphical abstract <p></p>