A drainage field, also known as a leach field, is a crucial component of a septic system. It consists of a series of trenches filled with gravel or other permeable materials, where treated wastewater is dispersed into the soil. This process allows the soil to naturally filter and purify the water before it reaches the groundwater. The design of a drainage field is essential for effective wastewater management. Proper installation and maintenance ensure that the system functions efficiently, preventing contamination of nearby water sources. Factors such as soil type, drainage capacity, and local regulations influence the size and layout of the drainage field.