How a saltwater pool actually works
A saltwater pool isn't chlorine-free. It uses a salt chlorine generator (also called a salt cell) to convert dissolved salt into chlorine through electrolysis. The pool water passes through the cell, chlorine is produced, sanitizes the water, and then reverts back to salt. It's a continuous cycle — you still have chlorine in the water, it's just produced differently.
The salt concentration is about 3,200 ppm — roughly one-tenth the salinity of ocean water. You can barely taste it, and it makes the water feel noticeably softer on your skin and eyes.
The real pros
✓ Softer water feel — noticeably gentler on skin, eyes, and hair
✓ No buying/storing chlorine — the system generates it continuously
✓ More consistent chlorine levels — less manual dosing required
✓ Lower annual chemical costs — salt is cheap; chlorine isn't
✓ No chloramine smell — that harsh "pool smell" is greatly reduced
The real cons
✗ Higher upfront cost — salt systems run $1,000–$2,500 installed
✗ Salt cell replacement — cells last 3–7 years and cost $400–$800 to replace
✗ Salt damages some materials — natural stone, certain metals, and some decking materials corrode faster
✗ Still needs professional chemistry — pH tends to drift high and requires regular adjustment
✗ Cold weather limitations — salt cells stop producing chlorine below ~60°F water temp, which matters here in Massachusetts
What Massachusetts pool owners should know
Here on the North Shore, our swim season runs roughly May through September. Because salt cells don't produce chlorine in cold water, you'll still need to manually add chlorine during openings, closings, and shoulder-season weeks when water is cool. That means saltwater pools in New England aren't quite as "hands-off" as they are in Florida or Arizona.
Salt can also be harder on pool equipment over time. Heater heat exchangers, metal ladder anchors, and natural stone coping are all susceptible to salt corrosion. If you have these components, factor in the potential maintenance costs.
Our honest recommendation
If you value the softer water feel and want to reduce the hassle of buying and storing chlorine, a saltwater conversion is worth considering. But go in with realistic expectations — it's not maintenance-free, and the water chemistry still needs professional attention.
We service both chlorine and saltwater pools across Peabody, Danvers, Beverly, Salem, and the entire North Shore. Whether you're thinking about converting or already have a salt system that needs attention, our dedicated saltwater pool service and weekly maintenance plans keep both types running perfectly.
Have questions about saltwater pools?
We service both chlorine and saltwater systems. CPO certified.