Best 5 Digital Water Flow Meters Reviewed + FAQ

Water flow meters are a must-have tool if you are a habitual gardener. Especially when you are looking forward to growing vegetables or “garden-farming.”

When you are dealing with special plants or shrugs that require just the right amount of water for proper growth, you need a device to tell you how much water you are giving your garden, and that is where Water Flow Meters kick in.

Alternatively, water flow meters can also be used with Water Sprinklers or Water Storage Tanks.

Here are some of the most widely used Digital Water Flow Meters that may help you in gardening:

Rainwave RW-9FM LCD Digital Water Flow MeterCheck Price
Gardena – Flow MeterCheck Price
Best Buy
P3 Save A Drop Water Flow Meter
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Best Overall
Fill-Rite TT10AN Fluid Flow Meter
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DIGITEN Water Flow Control MeterCheck Price

Rainwave RW-9FM LCD Digital Water Flow Meter

Rainwave RW-9FM LCD Digital Water Flow Meter

These are the things you should know about the Rainwave LCD digital water flow meter,

Introduction and Features

Designed and manufactured by “Rainwave”, this digital water flow meter is an excellent information tool if you are looking to find the quantity of water you are using at any point.

The meter follows a conventional construction and works on the same impeller principle. Unlike analog meters which give a random value, digital flow meters give precise readings.

Rainwave’s digital flow meter features an electronic LCD, as we see in Calculators these days.

There are also a couple of buttons that can be used to Power ON/OFF or unit switching.

The meter functions in both Gallons and Liters. So, you can set the meter to the unit you prefer.

The major construction of this meter is plastic to save it from rusting and it is a battery-operated device. However, the only thing that keeps the water away from the battery is a seal which seems pretty solid and well-fitting.

Depending on the usage, this seal might leak or break, which can practically ruin the flow meter.

The Good:

  • Easy to use
  • Durable
  • Accurate
  • Reliable
  • Battery Operated

The Bad:

  • Limited in operation
  • Cannot deal with high flow rates
  • Easily breakable
  • Cheap Seal Quality

User Insights

It is a straightforward product and there is no rocket science behind its entire use. The application of this flow meter is for household water outlets like in the garden and it cannot deal with strong flow rates.

It is a sensitive device and therefore should be respected and used within its limits. The flow meter itself can provide almost instant readings, but it requires the water to be flowing continually.

The batteries usually last a long time if the seal does not wear out. Unfortunately, the company has not included any other safety measures to save the device in case of a leak.

Any water that goes into the IC of the flow meter can permanently damage it and render it useless. Therefore, it is recommended to be used in Gardens or Backyards where high flow rates are not required. In the last part, the device is sensitive and should be handled carefully.

It can provide easy and accurate readings for the water flow and is very easy to use. The setup process is very easy and you are not required to have any tools for its installation: just a socket and a water outlet.


All in all, this water flow meter is recommended for home users and habitual gardeners who want to know how much water is consumed by them in a day.

However, its use is justified but not limited to gardening. It is just an informative device that provides some extra information to power users. You can also use it to measure the flow rate of a small house, like an RV or something like that.

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Gardena – Flow Meter


This is what you should know while buying Gardena Water Timer – Flow Meter,

Introduction and Features

Gardena provides most of the impressive gardening tools in the market. The company has always focused on the actual difficulties and challenges their products face while in the consumer’s hands and modified their products to overcome the barrier between man and machine.

Gardena Water Timer and Flow Meter is yet another masterpiece from the company that provides many value-added features to its users.

It includes a tough battery and an LCD that shows the battery’s status and other information necessary for the operation instead of simply displaying the quantity of water like normal water flow meters. However, the device is high in battery consumption.

Gardena also has an onboard memory that can keep showing you the quantity of water used per month, day, or even season.

All these features make Gardena one of the best options to choose from.

The Good:

  • Easy to use
  • Accurate
  • Water Timing
  • Control
  • Premium Build
  • Onboard Memory
  • Tough Battery

The Bad:

  • Expensive
  • Requires Cleaning
  • High Battery Consuming

User Insights

This flowmeter is suitable for people with automated gardening systems installed in their homes. Gardena computer systems are a perfect fit for their flow meters as they help the flow meter to reach the full potential of its work.

The flow meter is made of hard plastic and is crafted well enough to deal with an average garden’s atmosphere.

Nonetheless, the flow meter can be used as a single component. It is a bit tricky when setting the units up on this thing but once you get the job done, it should last you a lifetime if you respect the device in terms of usage.

The installation process is really simple and the device provides a tight fit on any water outlet. This not only saves the water spills from the water source but also helps the device get even more accurate readings.

You might need a complete set of fitters that are provided with the meter.

The battery of Gardena’s flow meter is a tough one but it bleeds rapidly with the device and you might need a couple to last a season. There is a battery icon displayed on the screen that helps you keep track of the status of the battery. So, you can replace the batteries whenever needed.

The device, being accurate, helps you in finding the exact timings as to when you should turn off the tap in your garden. For some people, that window could be hours. So, it helps you manage your time as well if you think technically and have been dealing with flow meters for a while.


In the end, the flow meter is a perfect device to use for experienced personnel or people who have automated systems installed for gardening.

The device works as well as it should and helps you keep track of time because of its accuracy.

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P3 Save A Drop Water Flow Meter

P3 Save A Drop Water Flow Meter Measure Gallon Usage

This is what a P3 Save A Drop Water Flow Meter sounds like,

Introduction and Features

Manufactured by P3 International, the Save A Drop Water Flow Meter is another precise and accurate flow-measuring device that can give you more information about your garden’s water consumption through an LCD. You’ll need to manually turn off the water as there is no solenoid valve to automatically stop the water flow.

It uses a formula to calculate the gross flow which can be obtained by measuring a singular gallon flow. It features an easy-to-read LCD combined with a rugged and waterproof housing. In low-light situations, you will need a light to read it.

The device is battery-operated and the battery is claimed to be long-lived.

The entire body of this water meter is made of plastic which makes it easily breakable but safe from rusting. It is all plastic, so be gentle when screwing it on and off so as not to cross-thread it.

The water meter is, like the Rainwave, a simple one and features two buttons on the front just below the LCD.

The meter is very accurate and precise. It is easy to install, so no problems in its usage should be expected if you use it carefully.

The Good:

  • Fast and Easy to use
  • Highly Accurate Readings
  • Long-lasting battery
  • Simple Installation

The Bad:

  • Weak Assembly
  • Mediocre Build Quality
  • Short life span

User Insights

Now, this water flow meter is a very delicate device and should be handled carefully because a strong turn can break this thing.

It is not meant to be used for high flow rates and is made to be precise and sensitive rather than strong and inaccurate.

The Save A Drop Water Flow Meter is a simple fl