TL;DR
A hydrostatic test is a leak and strength check in which piping or a vessel is filled with water, pressurized to a specified level, and watched for pressure drop over a holding period. Fire sprinkler systems get 200 PSI for two hours under NFPA 13 before acceptance; plumbing drain stacks are tested with a water column at rough-in; and septic tanks are tested for exfiltration by holding water level for 24 hours.
What it means
A hydrostatic test is a leak and strength check in which piping or a vessel is filled with water, pressurized to a specified level, and watched for pressure drop over a holding period. Fire sprinkler systems get 200 PSI for two hours under NFPA 13 before acceptance; plumbing drain stacks are tested with a water column at rough-in; and septic tanks are tested for exfiltration by holding water level for 24 hours. Using water rather than air makes failures undramatic, which is why codes specify it for high pressures.
Where it sits in the glossary
Hydrostatic test 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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