TL;DR
A drainfield trench is one of the individual excavations — typically 18 to 36 inches wide and 1 to 3 feet deep — that together make up a septic absorption field, each holding a bed of washed gravel and a run of perforated pipe or a gravelless chamber. Health codes set the spacing between trenches and the required separation from groundwater and wells.
What it means
A drainfield trench is one of the individual excavations — typically 18 to 36 inches wide and 1 to 3 feet deep — that together make up a septic absorption field, each holding a bed of washed gravel and a run of perforated pipe or a gravelless chamber. Health codes set the spacing between trenches and the required separation from groundwater and wells. Trench bottom must be dead level so effluent loads the soil evenly along the full length.
Where it sits in the glossary
Drainfield trench is part of the Trade jargon group inside the ProFix Directory glossary. Browse every term in this category from the glossary index.
Why Ohio homeowners should know it
This is a term Ohio homeowners encounter when reading contractor quotes, hiring paperwork, or inspection reports. Understanding it well enough to ask one good follow-up question is usually all the protection a homeowner needs.
ProFix Directory keeps definitions short on the index page and saves the longer context — Ohio-specific rules, where the term comes from, and which ProFix tools touch it — for these per-term pages so the term is easy to cite and easy to share.
ProFix tools that touch this term
See also
License: CC-BY-4.0 — quote freely with attribution to ProFix Editorial Team / ProFix Directory.