Get Started

⬢ Pool Professionals
Professional-grade products. Expert support. Built for your business.

⬢ Pool Owners
Eco-friendly, easy-to-use solutions to keep your pool clean and clear.

⬢ Industrial
Efficient treatment & supply. Performance-focused operations support.

⬢ Municipal
Reliable solutions & delivery. Sustainable treatment for public systems.

⬢ Dealers
Help your pool & spa customers with trusted, professional-grade products.

For Pool Pros: Master pool chemistry & avoid costly mistakes with our guide.

For Homeowners: Let HASA be your year-round Pool Partner.

⬢ Pool Products
HASA has the chlorine, algaecides, and sanitizers you need to keep your pool or spa clean and clear.

⬢ Hot Tub Products
Shop our full line of Hi-Temp spa care products, including Eco-Safe Clarifiers and pH Increasers.

⬢ Ancillary Products
Our eco-friendly water treatments are science-backed and purposefully focused.

⬢ Mini-Bulk Program
We deliver a premium 12.5% sodium hypochlorite solution for sanitizing commercial pools and large-scale water systems.

⬢ Blog
Learn from water chemistry experts.

⬢ Videos
Browse instructional how-to videos.

⬢ Safety Data Sheets
Download SDS sheets for HASA products.

⬢ Orenda Academy
For water chemistry & professional pool management knowledge.

⬢ Events
Find HASA at an event near you.

⬢ Rewards
Explore our HASA loyalty rewards program.

Use the HASA Dealer Locator See where our products are sold near you with this tool.

Master the Science of Chlorination. Keep Your Pools Cleaner, Longer.

Keeping pool water clean, safe, and sparkling isn't guesswork—it’s science. This eBook breaks down the chemistry of chlorine into clear, actionable insights any pool operator or owner can use. Learn how to sanitize smarter and reduce chemical waste, all while improving water quality.

What You’ll Learn:

What really happens when chlorine meets water
Why pH and CYA can make or break chlorine performance
How to calculate the right amount of chlorine for your pool

Perfect for pool service professionals, facility managers, pool-savvy homeowners and anyone who wants to stop wasting chlorine and start mastering it.

UnderstandingChlorination_EbookCover

Local Manufacturer

Expert Education and Support

Science-backed Advice

Control pH for Maximum Chlorine Efficiency

Learn how high pH shifts chlorine into a much weaker form, meaning you’ll need more to achieve the same sanitizing effect.

Manage CYA (Cyanuric Acid) Carefully

While CYA protects chlorine from sunlight, too much binds it up, leaving less available to sanitize. Learn what levels to maintain.

Minimize Organic Contaminants Before They React

Chlorine gets “used up” oxidizing sweat, oils, cosmetics, and other organics. Learn more - inside the guide.

Stop Wasting Chlorine

Whether you manage pools for a living or just want to keep your water crystal-clear, understanding how chlorine actually works is a game-changer. Simply fill in the form to get your guide instantly.