Salt Water Pool Chemical Levels Chart
Quick Answer
A salt water pool should maintain salt levels of 2,700–3,400 ppm, free chlorine 1–3 ppm, pH 7.2–7.6, total alkalinity 80–120 ppm, CYA 60–80 ppm, and calcium hardness 200–400 ppm. Salt water pools produce chlorine via electrolysis — the chemistry is the same as regular pools, just generated on-site.
- Salt water pools still require balanced chlorine, pH, alkalinity, and CYA
- Ideal salt level for most SWG systems is 2,700–3,400 ppm (check your generator)
- SWG systems produce alkaline by-products, so pH tends to rise faster — monitor closely
- CYA is essential for SWG pools: 60–80 ppm protects chlorine from UV
Calculate Your Levels
Reference table
| Parameter | Ideal range | Notes |
|---|---|---|
| Salt (NaCl) | 2,700–3,400 ppm | Confirm target with your SWG manual |
| Free chlorine | 1–3 ppm | Same target as traditional chlorine pools |
| pH | 7.2–7.6 | SWG raises pH faster; check 3×/week |
| Total alkalinity | 80–120 ppm | Lower end (80–100) reduces pH drift |
| Cyanuric acid (CYA) | 60–80 ppm | SWG pools benefit from higher CYA vs trichlor pools |
| Calcium hardness | 200–400 ppm | Low CH corrodes SWG cell; high causes scale |
| Total dissolved solids | Varies | Monitor cell efficiency; flush cell annually |
Frequently Asked Questions
What salt level should a salt water pool have?
Most residential salt water chlorine generators are designed to operate at 2,700–3,400 ppm salt. Check your generator's manual for the exact target — running too low reduces chlorine output; too high can damage the cell and equipment.
Do salt water pools still need chlorine?
Yes. A salt water pool generates chlorine on-site via electrolysis. The water chemistry is essentially the same as a traditional chlorine pool — you still need to test and manage free chlorine, pH, alkalinity, and CYA. The difference is convenience, not the chemistry.
Is the pH harder to manage in a salt water pool?
Yes. Salt water chlorine generators produce a slightly alkaline by-product (sodium hydroxide) as a side effect of electrolysis, causing pH to drift upward more quickly than in traditional chlorine pools. Add muriatic acid regularly to maintain pH 7.2–7.6.
Does rain affect a salt water pool more than a regular pool?
The effects are similar — dilution lowers all chemical levels including chlorine, pH, and alkalinity. However, in a salt water pool, heavy rain also lowers salt concentration, potentially reducing the generator's chlorine output until salt is replenished.
Calculate your dose
Also see: Pool Chemical Levels Chart · Chlorine Levels Chart · CYA Levels Chart
Last updated: June 2026