Pools have been around for centuries. Throughout their existence, they have continuously evolved, using multiple treatment methods for maintenance and safety. For example, over the last 100 years, pools have been treated with the following:
- • Chlorine – The first chemical invented for pool treatments in the early 1900s.
- • Ozone – Originally used to disinfect drinking water, Ozone was eventually used by Europe and the U.S. in the 60s and 70s to clean pool water.
- • UV (ultraviolet) – UV rays destroy bacteria and viruses by attacking their genetic core DNA.
- • Saltwater – With roots from Australia, this is a simple treatment method that entails using salt to produce chlorine.
- • Direct Hydroxyl Injection – A recent and modern method that involves injecting hydroxyl radicals to sanitize water.
Hot tubs have also been around for centuries. (Who doesn’t love a good soak?) It all began with the birth and popularity of hot springs and bathing chambers.
Providing hydrotherapy, soaking in hot springs was common among hunters and gatherers who often spent their days doing strenuous physical activities. Later in history, with Japan’s hot springs (onsen) and the ancient Romans’ public and private baths (balnea, balnea privata, and balnea publica), the concept of hot baths was a widely favored activity across cultures.
Japan was the first to create the modern hot tub (furo) and inspired its growth in the U.S. The tubs were originally wooden and caused problems such as mold and leakage, since they were unable to support water sufficiently. But over time, wooden tubs turned into fiberglass and then acrylic, accompanied by the installation of water and insulation filters.