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Additional Cassettes So You Don't Run Out
SENSE S2 Cassette Combo Pack
Includes 1 C5 and 2 C2 Cassettes
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$65
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SENSE S1
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SENSE S2
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Waterguru SENSE S1
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For Inground pools
  • Measures pH and free chlorine daily
  • Uses C1 Cassettes and test tube samples
  • Measures pool pump daily
  • Measure water temp every 30 minutes
out of stock
$283.50 $315
+ Free Shipping
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Waterguru SENSE S2
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For all pools and hot tubs
  • Fits round skimmer openings between 8.25" and 9.4"
  • Measures an industry leading FIVE pool chemistry parameters pH and free chlorine daily, plus cyanuric acid (CYA) stabilizer, total alkalinity, and hardness.
  • Uses C2 and C5 Cassettes - no test samples required
  • Measures pool pump daily
  • Measure water temp every 30 minutes
    Save 10%
    $310.50 $345
    + Free Shipping
    *Our FC and pH pads use custom WaterGuru proprietary chemistry. The TA, CH and CYA pads were more recently introduced. We are continuing to improve the algorithms and accuracy for these newer pads.

    How SENSE Works

    No more testing strips and last minute trips to the pool supply store. Get precise pool water test readings sent straight to your phone.
    Learn More

    Pristine Water Has Never been Easier

    Our smart monitors balance your pool perfectly and save you money on energy bills and over-treating. Discover how WaterGuru delivers worry-free pool care in the palm of your hand, no manual testing required.

    screenshot of waterguru app - seeing the chemicals in your pool

    Seeing the Chemicals in Your Pool

    Seeing pool water is deceptive. WaterGuru reveals the unseen truth. With water perfection under your control, burning eyes, itchy skin, cloudy water amd algae blooms are gone.

    No Chemistry Degree Needed

    Pool water chemistry changes daily due to weather, swimmer load, environment, and equipment performance. Keeping your pool water clean and balanced shouldn't be so hard. We do the monitoring while you do the living.

    Expert Pool Advice

    Expert advice based on the precise data of your pool’s chemical composition, size, and type means your pool water will always be ready for family, friends, and even pets to enjoy.

    screenshot of waterguru app - track your success
    Seeing the Chemicals in Your Pool

    Seeing pool water is deceptive. WaterGuru reveals the unseen truth. With water perfection under your control, burning eyes, itchy skin, cloudy water amd algae blooms are gone.

    No Chemistry Degree Needed

    Pool water chemistry changes daily due to weather, swimmer load, environment, and equipment performance. Keeping your pool water clean and balanced shouldn't be so hard. We do the monitoring while you do the living.

    Expert Pool Advice

    Expert advice based on the precise data of your pool’s chemical composition, size, and type means your pool water will always be ready for family, friends, and even pets to enjoy.

    screenshot of waterguru app - expert pool advice
    Seeing the Chemicals in Your Pool

    Seeing pool water is deceptive. WaterGuru reveals the unseen truth. With water perfection under your control, burning eyes, itchy skin, cloudy water amd algae blooms are gone.

    No Chemistry Degree Needed

    Pool water chemistry changes daily due to weather, swimmer load, environment, and equipment performance. Keeping your pool water clean and balanced shouldn't be so hard. We do the monitoring while you do the living.

    Expert Pool Advice

    Expert advice based on the precise data of your pool’s chemical composition, size, and type means your pool water will always be ready for family, friends, and even pets to enjoy.

    Importance of Water Chemistry

    Overchlorinated water creates unpleasant, and harmful conditions while underchlorinated water allows bacteria and algae to grow. Keeping pool water in the SAFE ZONE is a delicate balancing act made easy with WaterGuru high-precision daily testing and expert advice.

    unhealthy water
    Unhealthy Water

    Not safe for Swimmers

    unbalanced ph
    Unbalanced PH

    Damages Your Pool

    corrosion
    Corrosion

    Damages Equipment

    two people sitting on the edge of a pool

    PERFECTLY BALANCED
    WATER EVERYDAY

    Receive professional water treatment advice with WaterGuru SENSE. With our app, you can see your up-to-date pool data, easily keep track of your pool’s water quality and take preventative action to maintain the chemical levels.
    screenshot of waterguru app - export pool advice

    FAQs

    SENSE S1

    • WaterGuru SENSE S1
    • SENSE S1 Cassette
    • 4 “C” Batteries
    • Quick Start Guide 

    SENSE S2

    • WaterGuru SENSE S2
    • SENSE S2 C5 Cassette
    • 4 “C” Batteries
    • Float Ring for Spas and Above Ground Pools
    • Quick Start Guide 

    The WaterGuru SENSE is a smart device that’s installed on your skimmer with its
    Sensor dangling in the water in the skimmer basket.

    The WaterGuru SENSE S1 uses patented optical technology to measure daily the Free
    Chlorine (FC)and acidity (pH) of your pool water.

    The WaterGuru SENSE S2 uses patented optical technology to measure daily the Free
    Chlorine (FC), acidity (pH), Total Alkalinity (TA), Cyanuric Acid (CYA) and
    Calcium Hardness (CH) of your pool water.

    You can monitor your pool conditions through the WaterGuru app.  

    If your water chemistry parameters measure too high or too
    low, Advice will appear in the WaterGuru App to show you how to resolve the
    problem.  

    WaterGuru’s Advice is customized to your pool.  The
    Advice is based on your pool type, i.e. plaster, vinyl, indoor, outdoor,
    covered, not covered, and pool size as well as the types of chemicals you use
    to regulate FC and pH.  The Advice in the App will show you what chemicals
    you need to add to your pool to bring these chemical measurements back to the
    normal range.

    Yes. The WaterGuru SENSE comes with a 30-day money back guarantee and 1-year Warranty. 

    No.  We don’t believe in subscription fees.

    The WaterGuru SENSE S1 measures daily the Free Chlorine (FC) and acidity (pH) of
    your pool water using the supplied cassette. The SENSE S1 also measures the
    temperature, and the flow of your pool water.

    The WaterGuru SENSE S2 measures daily the Free Chlorine (FC), acidity (pH), Total
    Alkalinity (TA), Cyanuric Acid (CYA) and Calcium Hardness (CH) of your pool
    water using the supplied C5 cassette. The SENSE S2 also measures the
    temperature, and the flow of your pool water.

    Yes.  Even though it does not measure salt, the WaterGuru SENSE works just fine in salt water chlorine generator pools with salt levels up to 5000 ppm.  Click here to learn more.

    The SENSE S1 does not work in Hot Tubs or Spas but the SENSE S2 does work using the supplied Float Ring.  Click here to learn more. 

    WaterGuru C size batteries last for approximately 6 months. Performance may vary based on the brand of batteries used. WaterGuru recommends using ‘Energizer’ brand batteries which we have tested extensively.

    WaterGuru SENSE Cassettes hold strips of sensing pads that measure water chemistry parameters.

    The NEW WaterGuru SENSE S2 C5 Cassette measures Free Chlorine (FC), acidity (pH), Total
    Alkalinity (TA), Cyanuric Acid (CYA) and Calcium Hardness (CH), lasts one month and is designed for the SENSE S2 device

    The NEW WaterGuru SENSE S2 C2 Cassette measures Free
    Chlorine (FC) and acidity (pH), lasts 2 months and is designed for the SENSE S2 device

    The WaterGuru SENSE S1 Cassette measures Free
    Chlorine (FC) and acidity (pH), lasts 2 months and is designed for the SENSE S1 device

    SENSE is not currently available for shipping outside of the U.S. Check back frequently for updated information.

    You can purchase WaterGuru right here on our website

    The NEW WaterGuru SENSE S2 C5 Cassette which measures Free Chlorine (FC), acidity (pH), Total Alkalinity (TA), Cyanuric Acid (CYA) and Calcium Hardness (CH) is designed to last 1 month based on daily water measurements.

    The NEW WaterGuru SENSE S2 C2 Cassette which measures Free
    Chlorine (FC) and acidity is designed to last 2 months based on daily water measurements over a 2-month period.  

    The WaterGuru SENSE S1 Cassette which measures Free
    Chlorine (FC) and acidity is designed to last 2 months based on daily water measurements over a 2-month period.  

    Note: Performing additional water measurements will reduce
    the life of the cassette.

    Straight from WaterGuru Customers

    featured pool 1
    No more driving to Leslie’s.
    “I bought my Water Guru because I was tired of driving to Leslie’s for water testing.Now I get my test results daily with advice on how to correct the water chemicals.”
    Richard W, Texas
    featured pool 2
    No more trouble. My pool is in perfect, healthy balance.
    “It took one week to get my pool in perfect balance and has stayed that way all this year.Love it and it gives me daily readings of the water quality.I am using less chemicals than before and I never have to leave my house to get my reading.”
    Edward L, Louisiana
    featured pool 3
    Saving money and headaches.
    “If my pool's free chlorine or Ph goes out of range, I get an alert on my phone. Tests daily or on demand.Finally, something with a price affordable for individual consumer.You will save in chemicals and headache medicine to recover the cost.”
    Le Shek, California
    featured pool 4
    Protecting my pool investment.
    “I had a very low flow sensor warning my Water Guru.After looking into it, my pool filter was clogged.If It wasn't for the Waterguru. My pump would have burned out. Thanks for saving me a lot of money and stress.”
    Luis M
    featured pool 5
    Even when life gets busy the pool is tested.
    “I am retired, and didn't think I would need/want something like the WaterGuru. But it sounded interesting so I bought one. I'm so glad I did.Those times when pool maintenance gets away from you, or because your away from home for a few days, you can always check on the fly to make sure everything is where it should be when it comes to your chemicals.”
    David A, Arizona
    featured pool 6
    Far better than test strips.
    “The first thing most people are going to say is that it’s expensive, and I can buy lots of test strips for that price.Both items are valid, but the big difference is you are getting accurate readings and tracking of data.A test strip only gives you an approximation of where your levels are at.It’s a guessing game as to what the accurate reading is based on color.Guess wrong, and you are either out of balance or wasting chemicals.WaterGuru saves me money.”
    Brad B, Michigan
    featured pool 7
    Eliminated pool service problems.
    “After years of problems with a once-a-week pool service I purchased the WaterGuru SENSE and have been extremely impressed with the ease of maintaining balanced chemistry each and every day.I have saved money and eliminated the problems with a pool service and I am extremely pleased with the ease of maintaining my pool myself.”
    Larry W, Florida
    featured pool 8
    No more stress.
    “Before purchasing the WaterGuru SENSE - I would frequently stress about the condition of my pool.Since using this product, my pool has never looked better.Everyone compliments how clean our pool is.”
    Neil D, Illinois
    featured pool 9
    The perfect tool for the job.
    “I have been using WaterGuru for over a year now and it's the perfect tool. The historical graphs and the daily status on PH and Free Chlorine have given a much better analysis to keep the pool in a balanced state. Now, I can understand how rain, heat, and sunlight affect the pool chemical level without spending a lot of time performing the measurements.”
    Wayne K, Texas
    featured pool 10
    A Waterguru Neighborhood.
    “The WaterGuru is awesome! It has really made maintaining my pool easy, for the most part eliminated having to check my chemicals with a test kit which was a hassle. Love the chemical readings coming to my phone, it's a great app! I have now had four neighbors buy the WaterGuru.”
    Lee L, Georgia
    featured pool 11
    Feeling confident to manage my pool well.
    “The ease of pool care has gone up tremendously with the Waterguru! I never used to do it myself, but I now feel confident to be able to take it on and I enjoy it.”
    David W, Texas
    Compare Waterguru to Other Smart Pool Devices
    Waterguru
    Sutro
    ORP
    (Crystal, iopool)
    Automatic, remote measurements
    No subscription required
    Uses professional chemical reagents
    *
    Five or more parameters measured
    **
    Pump flow diagnostics
    Expert sourced water care advice
    Temperature measurement
    Automatic, remote measurements
    WaterGuru
    Sutro
    ORP
    (Crystal, iopool)
    No subscription required
    WaterGuru
    Sutro
    ORP
    (Crystal, iopool)
    Uses professional chemical reagents
    WaterGuru
    Sutro
    ORP
    (Crystal, iopool)
    *
    Five or more parameters measured
    WaterGuru
    Sutro
    ORP
    (Crystal, iopool)
    **
    Pump flow diagnostics
    WaterGuru
    Sutro
    ORP
    (Crystal, iopool)
    Expert sourced water care advice
    WaterGuru
    Sutro
    ORP
    (Crystal, iopool)
    Temperature measurement
    WaterGuru
    Sutro
    ORP
    (Crystal, iopool)

    * Note, ORP systems do not measure chlorine. They use a rough estimating technique called oxidation-reduction potential that only provides a millivolt reading indirectly related to free chlorine but affected by pH, temperature, cyanuric acid, organics, and other factors. The sensor drifts from contaminant fouling and requires daily calibration.

    ** ORP Systems typically use glass bulbs to measure pH. They must remain wet and will fail if dried out. Also, they will freeze and will fail if the temperature is at or below freezing.