TL;DR
A grout seal is the column of bentonite or cement slurry pumped into the annular space between a well casing and the borehole wall to block surface water, bacteria, and contaminants from migrating down to the aquifer. State well codes dictate minimum depths, often the top 18 to 50 feet, and licensed drillers must document the material and placement method.
What it means
A grout seal is the column of bentonite or cement slurry pumped into the annular space between a well casing and the borehole wall to block surface water, bacteria, and contaminants from migrating down to the aquifer. State well codes dictate minimum depths, often the top 18 to 50 feet, and licensed drillers must document the material and placement method. A failed seal shows up as coliform hits or turbidity after rain, and remediation usually means overdrilling and regrouting rather than chlorination alone.
Where it sits in the glossary
Grout seal 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
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