Liquid Chlorine FAQs

Questions and Answers about Liquid Chlorine Availability

Why has there been chatter recently about a lack of chlorine for the swimming pool season—is this true?

No. There is not a broad-based chlorine shortage! There is some confusion about chlorine availability and the different types of chlorine. Trichlor tablets are in short supply due to a variety of industry dynamics, but Liquid Chlorine (a proven, safe, and responsible pool sanitizing product) is 100% readily available to any and all pool service professionals and pool owners who are looking for a way to safely and effectively treat their pool during the coming swimming season. HASA Sani-Clor®, the leading sodium hypochlorite (liquid pool chlorine), is in abundant stock and offers an optimal cleaning and sanitizing solution.


What is the real chlorine availability situation?

While there has been buzz of late about a lack of chlorine tabs during this pool season, pool service professionals in the pool supply and maintenance industry who are properly informed know that it’s not a chlorine shortage we’re experiencing—only a chlorine tablet (dry product) shortage. There is no issue with the availability this season of Liquid Chlorine (also known as sodium hypochlorite, or bleach). HASA Sani-Clor®, the industry’s leading liquid sanitizer, is widely available to service all prominent Western-region pool markets. Learn more here.


Is Liquid Chlorine a viable choice for pool sanitization?

Yes. The industry has been embracing the advantages of Liquid Chlorine use for decades, even before the use of Trichlor tabs. In fact, the use of Liquid Chlorine has consistently gained momentum—as a result of pool owners and pool professionals seeking to improve the overall look, skin-feel, and cost of servicing their pool. Liquid Chlorine does not leave additional unwanted chemicals as byproducts after use, so it has been increasingly embraced and required in public and large commercial and hospitality swimming environments. HASA Sani-Clor® is long proven to be safe to use, works more effectively to clean and sanitize both residential and commercial swimming pools, is better for the environment, and creates the most beautiful, sparkling clear blue pool water available.


Is Liquid Chlorine currently available?

Despite its growing prevalence as the swimming pool sanitizer of choice, and the unprecedented demand both last summer and this coming summer, Liquid Chlorine remains widely available across the market. There is enough of an abundance of Liquid Chlorine to meet all of the daily sanitizing and shocking needs of pool service professionals and residential pool owners throughout the 2021 season…and for many seasons to come. Only chlorine (trichlor) tablets are in short supply—and the industry’s conversion to trusted Liquid Chlorine such as HASA Sani-Clor® began well prior to the present tablet shortage.


What is currently in short supply?

Trichloro isocyanurate (trichlor) chlorine tablets are in short supply—and have grabbed media attention in recent days. Certain stories that have circulated in the press have created an unfounded scare in the market and served to confuse pool service professionals and pool owner consumers alike—for no reason. Liquid Chlorine—the safer, go-to pool chlorination method for the past half-century—can be readily purchased and has always been available to anyone who wants it. In fact, there is enough Liquid Chlorine supply to care for all of the swimming pools in America many times over!


What are the differences between using Trichlor tablets vs. Liquid Chlorine?

Trichlor tablets came to popularity due strictly to a “perceived” convenience of application, but they actually offer certain setbacks for pool owners over time, as a result of residual chemicals (cyanuric acid or “CYA”) left behind after continuous use.  HASA Sani-Clor® Liquid Chlorine applied twice weekly, or less often through HASA’s easy-to-install liquid feed system, matches the convenience of tabs, yet provides the advantage of using pure and environmentally friendly sanitizer without contributing un-needed chemical byproducts to the swimming pool. It can also aid in the long-term condition of the pool water, tile and plaster of the pool. HASA’s Liquidator™ automated feeder is currently available to the marketplace to offer convenient daily dispensing of liquid sanitizer—and the new HASA Liquid Feeder™ will also be launching soon. Learn more here.


What are some of the advantages of Liquid Chlorine & HASA Sani-Clor®?

Changes in the swimming pool and hot tub industry are leading both pool service professional and residential pool owners to do the right thing—to select and use the safest products for their homes and families. Why? Because Liquid Chlorine is a better, safer cleaning and sanitizing solution that works harder to keep germs and bacteria out of your swimming pool—while also being better for our planet’s eco-system. HASA Sani-Clor® is:

  • Free of unnecessary and unwanted byproducts like cyanuric acid (CYA) that actually make chlorine less effective. (Also, there is no calcium by-product left from liquid, which could cause damaging scale)
  • Better and safer for the environment
  • Safer for pool service pros and pool owners to transport and handle
  • Made in the USA
  • Offers the best cost per use and value in the market
  • A long-standing proven way to ensure Safe, Clean and Clear sparkling blue pool water year round
  • The choice of the most beautiful pools in the world

Learn more here.


Who can buy Liquid Chlorine?

Whether you’re a pool professional or a residential pool owner, you will find an abundance of sodium hypochlorite product (Liquid Chlorine pool sanitizer) at your local retailer, or through your pool professional who likely buys from a professional pool product distributor. Pool professionals often use pro strength products, offered at a 12.5% concentration—giving it the best disinfecting power to keep pools and families safer. Liquid Chlorine sanitizer, which is free of unwanted, unnecessary byproducts such as the cyanuric acid (CYA) that leads to sanitizer in-effectiveness, is a preferred choice in commercial and Olympic-style swimming pools as well, where there is a high desire for sparking blue water.


Is Liquid Chlorine pool sanitizer the same as grocery store household bleach?

No. HASA Sani-Clor® pool sanitizer (with a 12.5% concentration) is labeled specifically for and approved for use in swimming pool applications and is a higher strength than the household bleach available in your supermarket, or through many big box retail outlets. Pool-grade liquid chlorine is readily available through a variety of local specialty swimming pool retailers, and can also be delivered fresh to pool service professionals in professional strength. Grocery store bleach is much weaker in concentration, and rarely labeled for approved use in swimming pools. Prior to the recent Covid-19 pandemic, grocery store bleach often sat on store shelves for weeks or even months before purchase, and it can often be degraded over time and lose partial purification and strength. Commonly available grocery store bleach, or some brands of bleach sold through big box retail outlets, also often contains other additives more suitable for use in household disinfection or laundry use. The two products are not comparable.


How long has Liquid Chlorine been used for swimming pool sanitization?

Liquid Chlorine has been the gold standard pool sanitization method for more than half a century. HASA Sani-Clor® is the ideal solution for Safe, Clean and Clear sparking, blue beautiful pool water year round, and Liquid Chlorine is the sanitizer of choice in many of the largest and most beautiful swimming pools in the world for professional, recreational and commercial use.


Will the industry be switching to Liquid Chlorine use over tablets?

The Liquid Chlorine Revolution within the pool supply marketplace is already underway. The industry has been witnessing a shift in pool product preference and adoption long before the tablet shortage even began. Why? Liquid Chlorine has been proven to be a safer choice for families and anyone swimming in, and enjoying, residential or commercial swimming pool water (it is currently the product of choice in regulated swimming environments such as commercial pools for this reason). It is also safer for pool professionals to transport and handle than certain types of dry chlorine, such as calcium hypochlorite granules, powder and tablets. Find HASA Sani-Clor® and Hasachlor® product information here.


Why is Liquid Chlorine a safer solution for residential swimming pools?

Liquid Chlorine pool sanitizer is the single most proven, safest and cost-effective sanitizer available. HASA Sani-Clor® has been the most dependable pool water disinfectant for more than five decades—delivering Safe, Clean and Clear water to generations of families so they can safely enjoy backyard swimming. Liquid Chlorine, in general, has also been the “unsung hero” in preventing the spread of bacteria, parasites and pathogens, in general, since the mid-1800s—leading the charge to defeat outbreaks of Cholera, Typhoid and other water borne illness within the mainstream public water supply, going back more than a century and a half.

Liquid Chlorine has literally transformed water treatment and safety—and has been the game changing solution to help ensure Safe, Clean and Clear drinking water and recreational pool water use within our modern society.


Is it true that chlorine tablets can no longer be used in commercial swimming pools?

Tablets have come under increased scrutiny in recent years. Chlorine tablet use is now highly regulated in commercial swimming pools, given safety concerns due to over-dosing of product over time. For the same reason, discerning pool service professionals and residential pool owners are opting for Liquid Chlorine sanitizer, which has been proven to be both safer and more effective in disinfecting residential pools and hot tubs. HASA Sani-Clor® sodium hypochlorite (Liquid Chlorine) is a Clearly Better® solution and contains no cyanuric acid (CYA) that can actually make chlorine less effective to clean and disinfect pool water. Also, there is no calcium by product in liquid, which can lead to the formation of damaging scale.


Is Calcium Hypochlorite a good alternative to trichlor tabs?

Tablets have come under increased scrutiny in recent years. Chlorine tablet use is now highly regulated in commercial swimming pools, given safety concerns due to over-dosing of product over time. For the same reason, discerning pool service professionals and residential pool owners are opting for Liquid Chlorine sanitizer, which has been proven to be both safer and more effective in disinfecting residential pools and hot tubs. HASA Sani-Clor® sodium hypochlorite (Liquid Chlorine) is a Clearly Better® solution and contains no cyanuric acid (CYA) that can actually make chlorine less effective to clean and disinfect pool water. Also, there is no calcium by product in liquid, which can lead to the formation of damaging scale.


Are “Salt Pools” better than “Chlorine Pools”?

There is a common misunderstanding about this by pool owners and pool builders alike. So-called “Salt Pools” use salt added to the pool to generate their own chlorine, using what is properly called a salt-chlorine generator. Salt-chlorine generators are proven technology, and consumers who can afford the cost and regular maintenance often prefer them because of the very measured and low dosage levels of chlorine they deliver to make water safe for swimming. Salt-chlorine generators also avoid the buildup of unwanted chemical byproducts that are contributed by chlorine tabs and powdered chlorine (see the discussion of cyanuric acid, above). Most manufacturers of salt chlorine generators still recommend periodically shocking the pool with Liquid Chlorine, because of its effectiveness in maintaining a safe swimming environment, and providing sparkling water clarity.


Due to increased demand and delays of materials shipped from other countries, could supplies of Liquid Chlorine be threatened in the coming months?

It is very unlikely. HASA Sani-Clor® is made in the USA, and the raw materials are derived from water, salt (simple table salt, sodium chloride) and electricity—three elements that are readily abundant in North America. Most all Liquid Chlorine manufactured in the U.S. is made regionally. Regional manufacturing helps ensure product freshness and product strength, which is important when it comes to Liquid Chlorine quality and effectiveness.   When purchasing Liquid Chlorine for use in swimming pools, rely upon your local swimming pool specialty retailer or pool professional, as they will know the best types of products and brands to recommend.


What is the role of Liquid Chlorine during the Covid-19 pandemic?

Throughout the past year, Liquid Chlorine has played a vital role in helping to fight the Covid-19 pandemic. Leading producers of liquid sanitizer have continued regular production at all facilities in adherence with the protocols established by governmental regulations, and in accordance with CDC recommendations and guidelines.

According to the CDC, and due in large part to the use of chlorine broadly as a sanitizer of choice, “There is no evidence that COVID-19 can be spread to humans through the use of pools and hot tubs. Proper operation, maintenance, and disinfection (e.g., with chlorine and bromine) of pools and hot tubs should remove or inactivate the virus that causes COVID-19.” Please read additional details about CDC findings regarding swimming pool and spa safety on the official CDC website at cdc.gov. Industry manufacturers recommend that users always maintain pool, spa, water, filter and equipment to manufacturer recommendations and pool/spa industry standards. This should provide adequate and optimal protection to meet CDC guidelines regarding swimming pool and hot tub use and safety during the COVID-19 crisis. More details here.


Can HASA Liquid Chlorine products also be used to clean and sanitize INDOOR surfaces?

Yes, HASA Sani-Clor®, Hasachlor®, Classic Bleach and Blue Whale Sanitizer are available for use on indoor surfaces and are available at local dealers and retailers for multi-purpose application to sanitize your home or business, as well as your swimming pool. These products can be used on nonporous, non-food contact surfaces. However, these products should not be used at full strength to clean your home or business. Prior to using, be sure to read all instructions on the product label and inside the packaging and how the sanitizing solution should be prepared—PLEASE ALWAYS USE EXACTLY AS DIRECTED. Instructions here.

Have an unanswered question? Email AskTerry@HasaPool.com.

Please be responsible when managing household or pool/spa cleaning supplies.

Liquid bleach like many household chemicals is for external use only—and needs to be treated with respect and used properly. Please always refer to the instructions on the packaging and on the accompanying label before using.

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