The drainfield filters the water through gravel and soil, naturally removing harmful bacteria before it reaches the groundwater. Common Signs of a Clogged Septic Tank

Dark, foul-smelling water backs up into your lowest drains (usually a basement shower or floor drain).

Soggy patches of grass or puddles of standing water over your septic tank or drainfield—especially when it has not rained—signal a massive failure. It means the ground is saturated because the system cannot absorb any more liquid. 5. Vibrant Green Grass