A percolation test, commonly called a perc test, determines the rate at which water absorbs into the ground. This test is essential for properly sizing and designing septic systems. It involves digging one or more holes, saturating the soil, and then timing how quickly the water level drops. The results inform decisions about the feasibility of installing a conventional septic system and guide the system’s design if viable.
Evaluating soil absorption rates is crucial for protecting public health and the environment. A properly functioning septic system relies on the soil’s ability to effectively treat wastewater. Without this assessment, inadequately sized or placed systems could contaminate groundwater, surface water, and even neighboring properties. Historically, regulations surrounding wastewater disposal were less stringent, but increasing awareness of environmental and health risks led to the widespread adoption of perc tests as a standard practice.
