♻️ap environmental science review

Leach Field

Written by the Fiveable Content Team • Last updated September 2025
Verified for the 2026 exam
Verified for the 2026 examWritten by the Fiveable Content Team • Last updated September 2025

Definition

A leach field is a part of a septic system that consists of underground pipes or trenches filled with gravel. It is designed to allow wastewater from the septic tank to slowly percolate into the soil, where it undergoes natural filtration and treatment.

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