You dissolve pool-grade salt (sodium chloride, NaCl) into your pool water to a target concentration of about 3,000 ppm. The water continuously flows through the generator cell, which uses electrolysis to split the sodium chloride molecules. This produces hypochlorous acid — the active form of chlorine — which sanitizes the pool. When the chlorine is consumed, it converts back to salt, and the cycle repeats.
The generator produces a constant, low-level supply of fresh chlorine rather than the peaks (after adding chemicals) and valleys (when depleted) of traditional manual chlorination. This steady state is what makes saltwater pools feel different.
| Factor | Traditional Pool | Saltwater Pool |
|---|---|---|
| Chlorine source | Added manually (tablets, liquid, granular) | Generated on-site from salt |
| Chlorine level | Varies with additions | More consistent |
| Water feel | Standard | Softer, slightly silky |
| Equipment cost | Low | High ($400–$1,500 for SWG) |
| Chemical costs | Higher (ongoing chlorine purchase) | Lower (salt is cheap and reused) |
| pH behavior | Variable | Tends to drift upward (more acid needed) |
| CYA needed | Yes (30–50 ppm) | Yes (30–50 ppm) |
| Still uses chlorine? | Yes | Yes — same sanitizer, different delivery |
False. They produce chlorine continuously. A properly functioning saltwater pool maintains 1–3 ppm free chlorine — exactly the same target as a traditional pool. If you are allergic to chlorine, a saltwater pool will affect you the same way.
False. Saltwater pools need pH testing and adjustment (salt generators raise pH), alkalinity management, CYA maintenance, calcium hardness control, and monthly salt level testing. The generator cell also needs cleaning (descaling) every 3–6 months and replacement every 3–7 years.
False. At 3,000 ppm, pool salt is barely perceptible. Ocean water is 35,000 ppm. You may notice a very faint mineral taste, but it is not "salty" in the ocean-water sense.
The real advantage of saltwater pools is convenience — no weekly chlorine purchasing, more consistent levels, and softer water feel. The disadvantages are higher upfront cost, pH management complexity, and salt corrosion on surrounding stone and metal fixtures.
SplashLens tracks salt level, chlorine output, pH, and all other parameters for saltwater pools. Log cell inspection dates and stay on top of the quarterly maintenance that keeps generators running efficiently.
Open SplashLens Free →Not inherently safer — both use chlorine to sanitize. Saltwater pools tend to feel softer and less irritating due to the steady, low-level chlorine supply. Chloramine buildup can be lower in well-maintained saltwater pools, reducing harsh chemical smell.
Most saltwater systems require 2,700–3,400 ppm. This is far lower than ocean water (35,000 ppm). At pool concentration, the salt is barely perceptible — it feels more like a mild mineral water than ocean water.
Yes. Saltwater pools need pH adjustments, alkalinity maintenance, CYA (30–50 ppm), calcium hardness management, and occasional shocking. Salt generators push pH upward, requiring regular acid additions. Test salt levels monthly and clean the cell periodically.
Salt chlorine generators are expensive ($400–$1,500). Cells need replacement every 3–7 years ($200–$700). Salt is corrosive to surrounding stone and metal furniture. pH drifts upward requiring more acid. And the pool still uses chlorine — it is not chemical-free.
Common causes: salt level too low (test and add salt if below 2,700 ppm), cell needs cleaning (calcium deposits on the plates), generator set too low, water temperature below 60°F (cells produce less chlorine in cold water), or cell is worn out and needs replacement.