Wastewater treatment is a critical part of safeguarding environmental health and sustainability because the discharge of untreated wastewater poses major hazards to ecosystems and human well-being. In the pursuit of more sustainable and nature-centric options, soil infiltration stands out as a possible method for wastewater treatment. In contrast to conventional treatment approaches, which frequently depends on intricate infrastructure and energy-demanding procedures, soil infiltration utilizes the innate capability of the soil to naturally filter and purify water. This method utilizes the physical, chemical, and biological characteristics of the soil, offering an environmentally friendly strategy for treating wastewater that aligns with the tenets of sustainable development. Generally, the soil infiltration process involves the introduction of wastewater into specially designed infiltration basins or trenches, initiating a journey through the soil layers. The complex interconnection among soil particles, microorganisms, and organic material works together to decompose pollutants, improving the overall quality of the treated water. Its versatility positions it as a practical choice for treating wastewater in both residential and industrial contexts, providing a decentralized and economical method. This chapter focuses on exploring the soil infiltration process, analyzing its advantages, limitations, and its implementation to treat wastewater. Lastly, this chapterdiscuss the integration of the soil infiltration method with Sustainable Development Goals (SGDs).