Key Takeaways
- Chlorine pools are cheaper to install and maintain.
- Saltwater pools are gentler on skin and eyes.
- Saltwater pools demand less upkeep but more professional assistance.
- Chlorine systems are less harsh on pool equipment.
- Saltwater pools use electrolysis to produce minimal chlorine.
- Converting to saltwater requires the right generator and salt.
What To Consider When Choosing A Pool System
When planning to add a pool to your home people often focus more on the ‘fun aspects’ of it such as the pool design and features you want to have. But when you get deeper into the planning stage you will come across the ‘saltwater vs chlorine pool’ debate. You’ll need to choose whether you want a traditional chlorine system or a saltwater system for maintaining the cleanliness of their pool. Both options will keep your pool in great shape, but they do have some significant differences and it really comes down to what will best meet your personal needs. Finding a good Pool Builder can help you make an informed decision as well, but here are some tips to consider:
How Each System Works (Technical Explanation)
How Chlorine Systems Work Chemically
Chlorine pools sanitize the water through a chemical reaction that releases free chlorine, which kills bacteria, algae, and organic contaminants. When chlorine tablets, liquid, or granules dissolve in water, they form hypochlorous acid (HOCl)—the active disinfectant.
As HOCl reacts with contaminants, it produces chloramines, which cause the strong “chlorine smell,” eye irritation, and cloudy water. This is why chlorine pools must be shocked regularly to break down chloramines and restore sanitation.
How Saltwater Electrolysis Produces Chlorine
Saltwater systems rely on electrolysis inside the salt cell. The owner adds regular, non-iodized salt to the pool (typically 2,500–3,500 ppm). As water moves through the generator, an electrical charge splits salt into chlorine and sodium, creating free chlorine automatically.
The chlorine sanitizes the water, then reverts back to salt, forming a continuous loop. This process produces gentler water with less noticeable chlorine smell while still maintaining sanitation.
Chlorine
The chlorine pool has been around for many decades and is a tried and true method for pool maintenance. With this system, chlorine is manually added to the pool and only requires a pump which circulates the water, preventing buildup of dirt, algae, and bacteria.
Because the system is so simple and common, many issues which may arise can be fixed by the homeowner themselves.
Otherwise, finding a professional to fix something should not be an issue. In relation to the saltwater system, chlorine systems are much cheaper to install and maintain, and require less electricity. Chlorinated water also will not damage pool features (such as lighting, heating, and masonry).
Chlorine pools do require regular and frequent maintenance because the homeowner is responsible for chlorinating the pool when needed. Chlorine water is also known to be drying on the skin, harsh on the eyes, and can fade bathing suits and pool toys.
Maintenance Requirements (Weekly, Monthly, and Seasonal)
Weekly Maintenance – Chlorine Pools
- Test chlorine levels (1–3 ppm)
- Test pH (7.2–7.6)
- Brush walls and skim debris
- Add chlorine as needed
- Shock the pool when water turns cloudy or chlorine drops
Weekly Maintenance – Saltwater Pools
- Test free chlorine output from the generator
- Test pH (salt systems often raise pH)
- Skim and brush walls
- Inspect salt cell indicators
Monthly Testing (Both Pool Types)
- Stabilizer (CYA) levels
- Calcium hardness
- Salt level (saltwater pools only)
- Phosphate levels (especially for saltwater pools)
Salt Cell Cleaning Intervals
Salt cells often accumulate calcium deposits.
Typical cleaning timeline:
- Every 2–3 months in heavy use
- Every 4–6 months in cooler seasons
Shock Cycles
- Chlorine pools: shock every 1–2 weeks
- Saltwater pools: shock only when chlorine demand is high or during algae prevention
Stabilizer Use
- Chlorine pools rely heavily on stabilizer to protect chlorine from UV
- Saltwater pools need less stabilizer but still require 60–80 ppm for optimal performance
Saltwater
Two big myths of saltwater pools are that they contain no chlorine and that they are salty like the ocean. While they contain much less chlorine than the chlorine pools, they still use chlorine to disinfect the water. Saltwater systems work through a process called “electrolysis” which uses salt to produce the minimal amount of chlorine needed to keep your pool clean.
The level of salt is nowhere near ocean levels, in fact they contain about 10x less salt than the ocean.
Many people find that, because of the lack of chemicals and low salt levels, saltwater pools are much softer on the eyes, skin, and swimsuit fabric.
However, the saltwater system is much more expensive than a chlorine system because instead of the single pump used in chlorine pools, you need a special salt chlorine generator to convert the salt to chlorine. While they are initially a much bigger investment, down the road they require much less work from you. While they have not been around for as long as chlorine pools, many people are switching to these systems because of their low need for maintenance.
Besides the initial cost, there are some other things to be aware of.
- Saltwater is damaging to plants and soil so you would want to avoid decorating with plants around your pool.
- It corrodes typical pool features like lighting, heating systems, and masonry so you will also need to invest in saltwater pool-specific ones which can be more costly.
- While maintenance is usually minimal, it typically requires professional help because these systems are quite complex.
Common Issues & Troubleshooting
Corrosion Concerns (Saltwater Pools)
Saltwater can corrode metal fixtures, heaters, masonry, and even nearby landscaping.
Using salt-safe materials and sealing stone surfaces prevents damage.
High pH Drift in Saltwater Pools
Salt systems naturally push pH higher due to the electrolysis process.
Weekly pH testing is essential, and occasional muriatic acid additions are normal.
Algae Growth in Chlorine Pools
Low chlorine, warm water, and debris can cause algae.
Shocking, brushing, and maintaining proper stabilizer levels helps prevent outbreaks.
Cloudy Water Issues (Both Systems)
Can be caused by high pH, dead algae, sunscreen buildup, or circulation issues.
Regular shocking and filtration usually resolve the issue.
Salt Bridge Issues
Salt can harden inside the salt cell, reducing chlorine production.
Breaking salt bridges and periodically cleaning the cell solves this.
Climate & Pool Type Suitability
Cold Climates
Salt cells stop producing chlorine around 50°F.
Owners must switch to manual chlorine or winterizing chemicals during colder months.
Vinyl Liner Pools
Saltwater can accelerate corrosion in hidden metal components.
Proper water balance and salt-compatible hardware mitigate the risk.
Fiberglass Pools
Considered the most salt-friendly option due to the non-porous surface and corrosion resistance.
Concrete & Plaster Pools
Saltwater may slowly etch plaster over years if pH is not maintained consistently.
Indoor vs Outdoor Pools
- Indoor saltwater pools: risk of metal corrosion indoors
- Outdoor saltwater pools: splash-out can harm surrounding soil and plants
- Outdoor chlorine pools: require more stabilizer due to UV breakdown
Environmental & Health Impact
Chemical Handling
Chlorine pool owners must store chemical chlorine products, which can produce fumes and require careful handling.
Saltwater systems eliminate the need for storing hazardous chlorine.
Environmental Considerations
Improper chlorine storage can contaminate soil and water.
Saltwater pools reduce hazardous waste but can damage plants and soil via splash-out.
Skin & Eye Sensitivity
- Chlorine can be harsh on sensitive skin
- Saltwater generally feels smoother and causes less irritation
Chloramine Smell
The “chlorine smell” comes from chloramines, not chlorine itself.
Proper shocking eliminates the smell and reduces irritation.
Comparison Tables
Table 1: Chlorine vs Saltwater – Quick Comparison
| Feature | Chlorine Pool | Saltwater Pool |
| Upfront Cost | Low | High |
| Ongoing Cost | Moderate–High | Low–Moderate |
| Maintenance Level | Higher | Lower |
| Feel on Skin & Eyes | Harsher | Softer |
| Corrosion Risk | Low | Moderate–High |
| Equipment Complexity | Simple | Complex |
| Best For | Budget owners, cold climates | Low-maintenance owners, warm climates |
Saltwater vs Chlorine Pool Video Explanation
Changing Pool Systems
If you decide to go with a chlorine pool initially but later on want to make the switch, here is what you can expect.
You will need to:
- Select the right salt generator: It is recommended to use a generator meant for pools about 1/3 bigger than your own pool. This way it is not running at full capacity all the time. Always running at full capacity consumes large amounts of energy and will put a lot of unnecessary strain on the machine which will limit its lifespan. If the generator is too small, it will not be able to generate the amount of chlorine your pool needs.
- Purchase salt. Saltwater pools use non-iodized (plain table) salt. The amount needed will vary but you will simply need to follow your generator’s specifications.
- Eliminate phosphates. Phosphates are a food source for algae and can also act as glue for contaminates inside your generator. Phosphate test kits are inexpensive and easy to use- you can buy products which go directly in your pool to lower the phosphate levels (recommended levels are under 200 PPB).
- Maintain. Your generator should last 3-5 years when maintained properly. There is an abundance of products such as pool softeners which can help extend the life of your saltwater generator.
Making the Choice
If your goal is to save money and do not mind a little maintenance work during the pool season, the fixture-friendly chlorine pools might be your best option. If low maintenance is the name of the game for you, then splurging on a saltwater pool would be a great move.
Neither are without their cons but at the end of the day, they will both keep your pool safe and clear. There are many factors to consider and many will be unique to your situation, for example whether you will let dogs swim in the pool, their hair can cause a problem in pool pumps. We recommend that you consult with your Pool Builder before making a final decision as they may be able to provide you with additional information for consideration. Also note that if you are financing your swimming pool, the price difference between these two options may only be a few dollars per month.
If you are weighing up different pool options see our other comparison articles:
Frequently Asked Questions
What’s the main difference between saltwater and chlorine pools?
Saltwater pools use a generator to convert salt into chlorine, while traditional chlorine pools rely on manually added chlorine. The key difference is the method of chlorine delivery.
Are saltwater pools gentler on the skin?
Yes, saltwater pools are generally gentler on the skin and eyes due to lower chlorine levels compared to traditional chlorine pools, which can sometimes cause irritation.
Which system is more expensive to maintain?
Saltwater pools have a higher upfront cost due to the generator but generally require less ongoing maintenance, while chlorine pools can be cheaper initially but require regular chlorine purchases.
Do saltwater pools still need chlorine?
Yes, saltwater pools still produce chlorine through the salt-chlorine generator, but the chlorine levels are typically lower and more consistent than in traditional chlorine pools.
Which system is easier to maintain?
Saltwater pools are often easier to maintain because the generator automates chlorine production, reducing the need for frequent chemical adjustments common in traditional chlorine pools.
