Pool Alkalinity Guide
Total alkalinity buffers pH so it does not swing wildly when you add chemicals or top off water.
What alkalinity does
It is the water’s capacity to resist pH change—often tied to bicarbonate and carbonate species. Fix alkalinity before large pH moves when possible.
Typical range
Many pools use 80–120 ppm total alkalinity; follow your surface and sanitizer system for specifics.
Low vs high
Low alkalinity leads to pH bounce; high alkalinity can lock pH high until you lower TA in a controlled way.
Calculator
Open pool alkalinity calculator
All alkalinity-related pages
- Typical range: 1–3 ppm chlorine
- Recommended pH: 7.2–7.6
- Test water regularly
WaterBalanceTools provides practical calculators and guides for pool and hot tub water chemistry. These tools are designed to help maintain safe chlorine, pH, and total alkalinity within a healthy water balance.