11 Best TDS Meters For Drinking Water In 2021


TDS meters are used to determine the amount of dissolved solids in the water, and while it doesn’t give you an actual reading of the dissolved solids, it does measure the electric conductivity in the water, which is an indication of the amount of particles present. TDS meters are a practical solution for testing the purity of drinking water. As there are diverse sources of water supply to our homes, it’s essential to have a TDS meter. TDS meters are commonly used in commercial filtration systems, in hydroponic systems to test salt levels, and to test for contamination in home purifying systems. So, do go through our review of the 11 best TDS meters for drinking water and make a decision towards a healthier lifestyle.

11 Best TDS Meters For Drinking Water

1. Test Assured Complete Water Analysis Test Kit

Test Assured Complete Water Analysis Test Kit

This comprehensive home water testing kit contains 10-in-1 tests and checks for iron, lead, nitrates, nitrites, copper, chlorine, alkalinity, pH, hardness, and total dissolved solids. One of the best TDS meters for drinking water, it’s easy to use and enables you to take your own samples and receive quick, accurate results without any requirement for lab testing. The combination of the water testing kit and TDS meter enables you to thoroughly test your water for multiple water contaminants and water hardness.


  • EPA quality standard
  • Digital TDS meter
  • Results within minutes
  • Comes with color charts and manual


  • May take some time to understand the instructions

2. Wiztech pH Meter

Wiztech pH Meter

Wiztech pH meter performs 3 functions— it measures pH, TDS, and temperature very accurately at the same time. With a high sensitivity glass probe, its pH meter has a full measurement range of 0-14 pH and gives an accuracy ±0.1. It also uses an efficient 3-point calibration method, calibrating the electrode to solutions of pH 4.00, 6.86, and 9.18 to ensure accuracy. It features a gentle green backlight that protects the eyes from glare. The backlight switches off automatically, saving power and ensuring battery life. It comes with automatic temperature compensation or ATC so you no longer need to pay attention to the temperature of the liquid being tested. The ATC can accurately determine the pH value of the sample in the temperature range of 0°C-60°C /32°F-140°F. It’s ideal for use in both households and laboratories for pH testing.


  • Durable electrodes
  • 2 display temperatures
  • Backlit LCD
  • Suitable for testing swimming pool water


  • Some may not be satisfied with its calibration

3. Cherioll Water Tester

Cherioll Water Tester

This multifunction TDS meter performs 4 functions— it tests the pH, TDS, EC, and temperature accuracy of water in no time at all. It can test the quality of drinking water, aquariums, pools, spas etc. and can make your day-to-day life healthier. The pH meter comes with an automatic temperature compensation or ATC and can calibrate itself automatically. All you need to do is press the calibration button. The LCD display screen shows the data clearly and automatically. In this TDS meter, the numbers on the pH meter range from 1.00 to 14.00 while the numbers on the digital EC and TDS meter range from 0 to 9990 ppm.


  • Convenient to carry
  • High accuracy
  • Has induction electrode
  • Can detect 3 kinds of impurities


  • The battery may not be long lasting.

4. Ketotek Water Quality Test Meter

Ketotek Water Quality Test Meter

This product comes with 1 TDS meter, 1 pH meter, 2 packets of pH buffer powder, and a user’s manual. This works out more economical than buying the 2 meters separately and can also be used independently as needed. The pH meter has an agile glass probe while the TDS meter has a titanium alloy probe. The digital TDS meter has a measurement range of 0-9990 ppm with ±2% accuracy while the pH meter has a measurement range of 0.00-14.00 pH, with 0.01 pH accuracy and 0.01 pH resolution. Both the meters have an auto-off function, which means it shuts down automatically when not in use and saves battery life. It also comes with automatic temperature compensation or ATC and so the temperature of the water does not affect the reading. Lightweight and small in size, they are easy to carry and use.


  • LCD display
  • Accurate readings
  • Comes with protective cover
  • Comes with pH buffer powder


  • Some may find calibrating difficult

5. Tvird 4-In-1 TDS Meter

Tvird 4-In-1 TDS Meter

This 4-in-1 tester enables you to test pH, TDS, and EC water quality as well as its temperature to make sure you’re always drinking pure water. The TDS meter measures the total dissolved solids such as metals, salinity, minerals, cations or anions which are dissolved in water and has an accuracy of ±2%. If the value is greater than 50 ppm, the light turns red and if it is less than 50 ppm, it turns green. The electrical conductivity or EC tester checks the electron ions present in the water. It has a high-precision pH meter with highly sensitive built-in glass electrodes which can sense and test the pH of the liquid in no time. The electronic screen helps to read the data which is in a range of 0-14 pH. This TDS meter has an automatic temperature compensation function and the reading is not affected by the water temperature.


  • EU Certification
  • Automatic calibration
  • Accuracy of ±0.01 pH
  • Pen style design


  • Does not include any chart as to what the readings indicate

6. Liumy Water Quality Tester

Liumy Water Quality Tester

This digital TDS meter comes in a set of 2 testers, one for the TDS and the other for the pH of the water. The TDS meter can give readings from 0~9990 ppm with an accuracy of ±2%. It comes with a backlight function and also has the function of automatic temperature compensation. The pH meter features an ATC and has a measuring range of 0~14 pH with an accuracy of ±0.01 pH, so it can give you the acid-basic value of the water. It has an auto-off function, which means it shuts down automatically when not in use and saves battery life.


  • Compact and easy to carry
  • Wide range of application
  • Can also measure EC and temperature
  • Data is available in 5 seconds


  • The pH meter does not feature a backlight.

7. HoneForest TDS Meter

HoneForest TDS Meter

This digital PPM meter is designed with advanced microprocessor technology and combines a TDS meter, EC meter, and temperature meter in one ergonomically designed pen. For higher accuracy, it comes equipped with a premium quality titanium alloy probe. It also has the feature of automatic temperature compensation, which means the temperature of the water will not affect the meter reading. The backlit LCD screen turns green if the TDS is less than 40 and red if it’s more than 40. It has the added feature of auto-lock, so the reading can be stabilized in seconds and locked automatically for the convenience of reading and recording. It can also be locked manually by pressing the ‘HOLD’ button. HoneForest water quality tester automatically switches off after 2 minutes of not being in use to conserve the battery, and as a plus, it comes with a 3-year warranty.


  • Backlit LCD
  • Factory-calibrated
  • Includes a protective case with belt clip
  • Colored TDS chart to explain ppm readings


  • Does not test pH

8. Health Metric TDS Meter

Health Metric TDS Meter

This meter measures the TDS, electrical conductivity or EC, and temperature in both °F and °C of any liquid in a matter of seconds. It has a range of 0-9999 ppm for TDS, 0-9990 μs/cm for EC, and 32-176°F and 1-80°C for temperature. Fitted with the latest sensors and titanium alloy electrodes, this meter comes calibrated from the factory and gives you instant TDS or EC readings without requiring manual calibration. This TDS meter has a backlit LCD screen that’s easy and convenient to read. It has the feature of auto-lock and manual-lock so that the reading can be locked automatically for convenience of reading and recording. It automatically switches off if not being used to extend battery life.


  • Easy to carry anywhere
  • 4 display modes
  • Easy to recalibrate
  • Comes with a free user guide to explain meter readings


  • Does not test water hardness

9. Hofun 3-In-1 High Accuracy Water Quality Tester

Hofun 3-In-1 High Accuracy Water Quality Tester

With the push of a button, this digital TDS meter can read the overall purity of your drinking water which will then be displayed on the LCD screen in ppm. This helps you to know whether your water purifiers are doing their job properly and when to change the filter. This water testing meter checks the TDS, EC, and temperature of your drinking water with the most updated and advanced technology. Fitted with a high quality titanium alloy probe, this TDS meter enables quick and convenient testing. It comes with a superior, convenient, easy-to-read backlit LCD screen and allows wider angles of data reading. The backlight turns red if the ppm is above 40 and green when it’s below 40. It shuts off automatically when not in use for more than 2 minutes, thus conserving battery life.


  • Auto calibration
  • Accurate reading
  • Automatic temperature compensation
  • Allows night reading


  • Doesn’t measure pH of the water

10. Luoleina Digital TDS Meter

Luoleina Digital TDS Meter

This 3-in-1 TDS meter combines TDS, EC, and a temperature meter with improved accuracy. It also comes with automatic temperature compensation and a measuring range of 0-9999 ppm and accuracy of ±2% for TDS, 0-9990 μs/cm for EC, and a temperature range of 32-176°F and 1-80°C. The backlight turns red if the ppm is above 40 and green when it’s below 40. It also has a feature of auto data-hold to lock and record readings and an auto-off function for extended battery life within 9 minutes of its last use. After locking, you can press the “SHIFT” button and the instrument automatically shifts between the 4 display modes. This TDS meter for water testing is highly accurate due to its advanced microprocessor technology.


  • Color-coded display
  • Comes with battery
  • Easy to use
  • Backlit LCD screen


  • The meter might display misspelt words.

11. Ammzo TDS Meter

Ammzo TDS Meter

This 4-in-1 TDS meter for water testing can accurately and quickly check the soluble salt content, heavy metal content, and ionic organic matter in water. It tests the TDS, EC, and displays the temperature in both °C and °F. It now comes in a new upgraded version of 2020, which makes it all the more efficient. It is fitted with a high-quality titanium alloy probe that measures TDS in a range of 0-9999 ppm. This TDS meter gives better results in normal temperature and non-flowing water.


  • Color coded scale
  • Accuracy is ± 2%
  • 1 year replacement warranty
  • Does not need calibration


  • Some may not be satisfied with the temperature meter

Now that you have been through our review of the 11 best TDS meters for drinking water, we will share a few tips on what to keep in mind while choosing a TDS meter for your use.

How To Choose The Right TDS Meter For Drinking Water

  • Ratings or readings

It is another vital point that you need to check in every TDS meter as it relates to the checking process of the water. The company must mention the micron ratings or PPM ratings in the product description. If not, there is no way of knowing the actual micron or PPM rating of the meter. A good quality TDS meter should have a micron rating of 0.3 micron, and for PPM readings, you should buy a meter that has 0 to at least 990 ppm.

  • Purpose

While buying a TDS meter, you need to keep in mind whether you need it for single-purpose or multi-purpose use. A single-purpose meter can be used for a particular sample of water only, that is, you can use it for only filtered water. But if you buy a multi-purpose meter, you can check any type of water with it.

  • Battery saving feature

Battery life of a TDS meter is generally limited. The more you use the product the faster the battery gets exhausted, and you may have to invest in a new TDS meter. To increase the longevity of the product, it’s wise to buy a product with battery saving features which shut off automatically and preserve battery life.

  • Technology

The microprocessor TDS meter uses the latest technology and gives accurate and reliable results. Most meters use electrical conductivity for measurements which is used to assess the presence of electrolytes. Advanced technologies employ several principles and conversions to ensure accurate readings. It is also of vital importance that the meter gives a reading of chemicals and toxic metals present in the water.

  • Added features

Many TDS meter brands offer a range of additional features, like you can choose one offering you a leather cover for the meter to protect it. Also, some meters have the feature of taking the temperature of the water as well. But do keep in mind whether these additional features of the TDS meter are worthwhile for you as they would come at an extra cost.

TDS testers are handy and vital in checking if your purifier is working to its best ability and to ensure that the water you’re drinking is healthy and pure. They can help increase the lifespan of your water purifiers as you will be able to estimate changes and replacements of its parts in time. But the biggest impact that a TDS meter has is on your health and that of your family. Impure or contaminated water is the root cause of many diseases, some of which can be dangerous. We hope that our review of the 11 best TDS meters for drinking water will help you to make a smart choice.