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.
5 min read
What is a Saltwater Pool? Just what is a so-called "saltwater pool"? There is confusion over this term because there are pools in the world that use water from the ocean. These are known as seawater pools, which are filled directly from the ocean...
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3 min read
CSI: Chlorine Scene Investigation - The Case of the Itchy Eyes
5 min read
Most people likely associate pollen with springtime sneezing, yellow coatings on cars, or the birds and the bees. But for pool owners and...
5 min read
Are You Ready? The official start of summer may be Memorial Day weekend; however, the start of pool season can be as unpredictable as the weather....
2 min read
Chlorine Confidential: The Case of CAC, the chlorine smell
6 min read
What Is Liquid Pool Shock and "Shocking" a Pool? In the pool service industry, few terms are used as loosely—and as inconsistently—as “shock.” For...
5 min read
Pool Season 2026 Is Almost Here: How to Open a Pool If your unofficial start of summer is Memorial Day weekend, that means the kickoff of pool season...
8 min read
In the 1930s, Dr. Wilfred F. Langelier introduced something that reshaped how we understand water balance. It's called the Langelier Saturation...
6 min read
When it comes to pool chemical safety, there’s no room for shortcuts. Whether you’re a seasoned pool service pro or someone managing a community or...
8 min read
When most people picture a pool service visit, they imagine a quick skim, a chemical top-off, and a wave goodbye. But anyone who’s watched real pool...
