Saltwater Pools vs. Chlorine Pools: The Pros and Cons

Did you know that one of your most valuable home infrastructures in Central Texas is your swimming pool? Especially through our 100°C+ summer months. But did you ever wonder what the difference is between running a traditional chlorine pool vs going fully saltwater? Each system works very differently with Austin’s ever changing environment. High UV environments like the Hill Country, Austin hard water composition, and seasonal organic loads(cedar pollen, etc…) play a huge role in long-term performance and cost.

Maintaining hundreds of pools throughout the Central Texas area from Westlake to Round Rock has given us a front row seat to how our Texas climate affects both systems. In this article, we explain how each system works, their actual cost compared to each other and the Austin specific factors you should consider when deciding which is right for you.

The majority of pool care books, magazines, and websites write for the average American backyard pool. Living in Austin isn’t always average. From blazing summers to bitter winters, high pH levels to flouride in the water supply–your pools behavior and maintenance needs can differ from national standards. So what’s the Austin reality that every pool owner should know?

If you didn’t already know, running a pool in Austin during the summer is a full-time job. High heat leads to quicker chlorine burn off, higher risk of algae blooms, and maxes out your pools chemical demand. Whether you have a salt generator or feed your pool chlorine manually, you’ll have to be much more diligent with your chemicals than other regions. Salt generators, despite their name, can really struggle during the heat and high bather loads we see month after month here in Austin.

No doubt you’ve heard about how hard Austin water is. Ours is some of the hardest in Texas thanks to limestone. High calcium levels lead to scaling on all surfaces, equipment, and most importantly– salt cells. That’s why we recommend our annual Salt Cell Cleaning service twice a year for Austin area saltwater pools. Neglect this crucial service and you’ll notice diminished chlorine output, shorten the life of your cell, and be forced to pay to replace it sooner than you thought.

Our state trees want to take over your pool every spring and fall. Cedar, oak, and mountain cedar pollenses can completely cover pool surfaces within hours of a big drop. Excess organic materials like pollen increases chlorine demand and can also clog salt cell membranes. All pool owners in Austin should test their water more frequently during peak season and be prepared to make adjustments as needed. We’ve even seen clear pools turn green within 48 hours because levels weren’t checked!

Annual evaporation rates in Austin can reach up to 2″ per week during peak summer months. While this can greatly affect your water bill, it can also influence your pools chemistry. Saltwater pools will become too salty if you don’t add water often, requiring you to retest your salt levels to ensure they’re in range. Chlorinated pools will experience a harder water push if you top off with Austin tap water. That affects pH levels and total alkalinity faster than you think. Prepare to test and adjust your water more frequently than the average guide recommends.

Chlorine pools have been the standard for decades because they’re simple and reliable. No fluff, gadgets, or gimmicks required to keep your pool water clean.

Saltwater may be all the rage, but good ol’ chlorine pools aren’t widely used for nothing. They’re straightforward, dependable and don’t require complicated technology to keep the water crystal clear and ready for swimming.

How Chlorine Pools Work

Think of chlorine pools as you supplying the manpower. Liquid chlorine, tablets, or granules—your task is the same. Whichever form you use, you’re killing bacteria, algae, and any other pesky microorganisms that find their way into your pool.

• Chlorine + Water = Hypochlorous Acid (the sanitizer that cleans your pool)
• Swim chlorine levels should be tested 2–3 times per week.
• Ideal range is 1.0–3.0 ppm. Add more if too low. If it’s too high, simply wait.
• Monitor pH between 7.2-7.6 to ensure chlorine is working effectively and swimmers aren’t irritated.

When you consistently test and balance, chlorine pools can provide you blue, clear water with little fuss.

Pros of Chlorine Pools

If you’re the type who likes control and predictability, chlorine might be your poolside match. Here’s why:

• Installation cost is less. Forget salt generators and electrical upgrades. Stock pool supplies will do. 
• Troubleshooting is simple. Chlorine pools are basic and most pool professionals are familiar with them.
• More control. Feel like shocking your pool before company arrives on Friday? Go ahead. 
• Accessible products. Find it at the grocery store, pool store or online. You’ll never have to wait for parts. 
• Recovery time is quick. Shock your pool after a thunderstorm or algae bloom and be swimming that same day.
• Maintenance cost is predictable. Set monthly budgets because equipment won’t break down unexpectedly.

Cons of Chlorine Pools

• Chemical smell. That “chlorine smell” is actually called chloramines. Chlorine reacts with sweat and body oils on swimmers to form chloramines.
• Red, burning eyes and itchy skin. Chlorine toxicity causes red, stinging eyes and itchy skin after swimming.
• Manual chemical additions. Liquid chlorine, chlorine tablets and chlorine granules must be handled and stored properly.
• More pool testing. 2–3 times per week during swim season. Letting your routine slide = algae. 
• Chlorine levels will fluctuate. Manual feeders = more highs and lows in your chlorine levels. Austin weather is harsh! 
• Swim clothes and pool accessories will bleach over time.

Saltwater pools are created by using a salt chlorine generator. These systems produce chlorine from the salt that is dissolved in the water. Saltwater systems come with higher initial costs but feature softer water and automated sanitization.

How They Work

Saltwater pools don’t actually contain saltwater like the ocean. Instead, they use a salt chlorine generator to convert salt into chlorine through a process called electrolysis.

• Salt is injected into the system at 3,000–4,000 ppm (much less than seawater at ~35,000 ppm).
• The salt cell runs an electric current through the salt, splitting the molecules apart and forming chlorine.
• The chlorine sanitizes the water, and then converts back to salt forming an endless cycle.
• Primary costs are the salt chlorine generator ($500–$2,500), the control panel ($1,000–$3,000), and buying your initial load of salt ($50–$150). Once installed, your chlorine levels stay constant without manual addition of chemicals.

• Salt is injected into the system at 3,000–4,000 ppm (much less than seawater at ~35,000 ppm).
• The salt cell runs an electric current through the salt, splitting the molecules apart and forming chlorine.
• The chlorine sanitizes the water, and then converts back to salt forming an endless cycle.

Primary costs are the salt chlorine generator ($500–$2,500), the control panel ($1,000–$3,000), and buying your initial load of salt ($50–$150). Once installed, your chlorine levels stay constant without manual addition of chemicals.

• Less irritating water (skin, hair, eyes)
• Water doesn’t smell like chemicals and doesn’t dry out your skin
• Less chlorine handling – The generator automatically makes your own chlorine
• Consistent chlorine levels – Reduces algae outbreaks
• Saves you money on chemicals over time, significantly so for bigger pools
• Kinder to bathing suit colors over time

• More expensive to start. Converting an existing chlorine pool to saltwater will cost around $3,000–$5,000.
• Replacement of salt cell every 3–7 years for $1,000–$2,000.
• Increased electric bill due to daily operation of salt generator ($50–$300/month depending on pool size). To mitigate these costs, many of our clients switch to energy-efficient variable speed pool pumps
  , which can significantly reduce the monthly overhead of running a saltwater system.
• Salt increases pH. This means you may have to check pH more often and add pH down. We recommend cleaning your salt cell twice a year, which costs $75 +Tax.
• Salt can be corrosive to some surfaces. Make sure your heater, ladders, lights, etc. are salt-water safe.
• Potentially more specialized service. Salt generators aren’t something every pool guy deals with.

Cost to maintain a traditional chlorine pool is simple – you need your basic filtration equipment. Saltwater conversions cost $1,650–$3,850 more for a generator, control panel upgrades and initial salt.

Annual operating costs vary by system:

Pool Type	Annual Chemical Costs	Equipment Replacement	Total Annual Cost
Chlorine	$450-$1,200	Minimal	$450-$1,200
Salt Water	$200-$650	$1000-$2000 (cell replacement)	$1200-$2,650

Saltwater systems may save you money over time if you have a larger pool or one with heavy bather loads—but keep in mind that Austin’s high electricity prices and hard water’s effect on salt cell longevity are both factors that can lessen savings.

With chlorine pools, you are looking at testing 2–3 times per week, manual addition of chemicals, weekly shocking, and frequent pH balancing. Saltwater pools are more automated, but they’re not totally hands-off.

Main differences unique to Austin pools:

• Chlorine pools: Weekly shocking, regular pH balancing, chemical storage, consistent testing—Easier said than done with our long swimming season.
• Saltwater pools: Clean salt cell every 6 months (SUPER important in Austin because of our hard water), watch pH, run generator to make sure working properly, check salt levels if we have a big evaporation/rain event.

Salt water systems still need balancing with chemicals. Generator creates chlorine, but it does not create pH up/down, algaecide, etc.

Water quality feels very different from system to system. Saltwater forms softer water that is easier on skin and hair. It also maintains more consistent chlorine levels which lead to less burning and chemical smells. Swimmers with sensitive skin tend to have a very strong preference for saltwater.

However, a well-maintained chlorine pool can be very comfortable to swim in without any harsh side effects. The majority of comfort-related complaints are due to poorly maintained chlorine pools, not chlorine itself.

• You will be buying and transporting chemicals for a chlorine pool regularly – additional packaging and transportation concerns.
• Saltwater pools cut down on transporting chemicals but use more electricity.
• Saltwater is harsh on plants/soil when backwashing your pool. Make sure you understand how your drainage will flow and what it could impact. (In Austin, most yards are landscaped)
• Both pools sanitize with chlorine, saltwater pools just make their own.

Salt will slowly corrode equipment and finish surfaces. 316L stainless steel, plastics and vinyl fittings, fiberglass surfaces and well finished concrete are compatible with saltwater. Old metal accessories, some stones and rock blends as well as older heater models may require upgrades. Double check compatibility on your existing equipment before retrofitting.

Salt generators become ineffective when the water temperature drops below 60°F. Meaning not a huge deal for Austin winters, but something to consider when thinking about maintenance come shoulder-season. A bigger factor for us though is the temperature cap. When it gets REAL hot here in Austin and you’ve got a high bather count, your salt generator may have trouble generating enough chlorine to meet demand. Expect to maybe have to dose chlorine in these circumstances.

If we receive a heavy rain storm here in Austin, you’ll have to rebalance both systems chemistry. Rain heavily dilutes pool water. With chlorine pools you’re just adding more chemicals. With saltwater you may have to add salt and check your pH again.rebalance the chemicals either way.

Aqua Clear Pool Care’s Salt Water Conversion service can take care of everything for you. Need to upgrade equipment, install a generator, do electrical work and set you up with initial chemistry, we can do it all. We have done hundreds of conversions from the trendy new homes in South Congress to the older gated communities in Steiner Ranch. Whether you value the unparalleled bather comfort of a saltwater system or need the reliable cost-effective output of traditional chlorine sanitization, a well-designed sanitization system is an investment in your home.