Manual Testing Ends Here. Welcome to Smarter Water
Because dipping your paper in water is outdated.
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Precise Hot Tub Water Testing
Automatically tests pH, free chlorine (FC) or total bromine (TB), and total alkalinity (TA). No test strips. No guesswork.
Built for all Hot Tubs
Designed for all hot tubs, including saltwater systems. Smart water monitoring without complicated installation.
Rechargeable & Wireless
Powered by a rechargeable Li-ion battery with included wireless charger. Track battery status directly in the app.
Test From Anywhere
Monitor and test your hot tub water from anywhere using the Purezone App. Wi-Fi connected with on-demand testing and real-time alerts.
48-Test Smart Cassettes
Each P3 cassette delivers 48 precise water tests lasting up to 60 days. App alerts tell you when it's time to replace.
Personalized Chemical Guidance
Get clear treatment recommendations based on your exact water chemistry. Maintain balanced hot tub water without overtreating.
Purezone® puts spa water chemistry where it belongs — in your control
Shop Purezone TodayWater Testing You Can Trust
Compare our advanced testing technology with typical competitors and see the difference.
| Features | Purezone | Typical Competitor |
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| Accurate in Hot & Cold Temps |
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| Hot Tub Specific Design |
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| Full Water Chemistry Testing |
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| Lab Style Test Methodology |
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| Dock Options |
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Accurate in Hot & Cold Temps
Hot Tub Specific Design
Full Water Chemistry Testing
Lab Style Test Methodology
Dock Options
Purezone by Balboa is a next-generation automated hot tub water testing system engineered for precision and convenience. Developed by Balboa Water Group, a global leader in spa technology, Purezone is powered by advanced optical sensor technology that continuously monitors critical water chemistry levels and sends real-time data to your smartphone. Unlike manual testing kits or color-based strips, Purezone provides accurate readings and intelligent treatment recommendations, giving hot tub owners a smarter, more reliable way to maintain optimal water balance.
Frequently Asked Questions
Purezone uses optical sensor technology to measure hot tub water chemical levels including pH, free chlorine (or total bromine), and total alkalinity — without test kits. It sends daily test results and rebalancing advice to your phone.
Purezone is designed for above ground, outdoor residential hot tubs made of acrylic, vinyl, fiberglass, or rotomolded plastic. It also works in salt water, copper ionization, and inground hot tubs.
No. The Purezone App and water care advice are completely free. You only pay for the hardware and replacement cassettes.
Yes. Your Purezone account can support multiple hot tubs — great for vacation properties or rental hot tubs — all managed from one app.
Yes! Using the Purezone app, you can tap 'Test Now' from anywhere you have Wi-Fi. On-site tests complete in about 10 minutes; remote, cloud-based tests may take up to 45 minutes.
Purezone continuously tracks water chemistry so you never have to guess — alerts are sent directly to your phone when attention is needed.
Purezone works with your existing spa hardware. No extra tools required.