TL;DR
Total alkalinity is the measure of dissolved bicarbonates and carbonates in pool water that buffer pH against sudden swings, kept in the 80 to 120 ppm range for most plaster and vinyl pools. When it runs low the pH bounces with every rainstorm and bather load; when high, the water drifts alkaline, clouds, and scales heaters.
What it means
Total alkalinity is the measure of dissolved bicarbonates and carbonates in pool water that buffer pH against sudden swings, kept in the 80 to 120 ppm range for most plaster and vinyl pools. When it runs low the pH bounces with every rainstorm and bather load; when high, the water drifts alkaline, clouds, and scales heaters. Service techs raise it with sodium bicarbonate and lower it with muriatic acid additions, always adjusting it before chasing the pH itself.
Where it sits in the glossary
Total alkalinity 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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