Water meter is a device used to measure the volume of water usage. If you are worried that you are paying too much for your water bills, unfortunately there is not the option to switch suppliers. You can however switch to a water meter which could save you money as you will only then be charged for the water you actually use. Digital water meters can display the readings on LCD display panel. Automatic meter reading water meters use wireless communication to transmit the meter reading data to utility companies. There are prepaid and postpaid water meters which can control the water supply based on bill payments.

Installing a meter can reduce water usage and could save you money. Paying for what you use also means that less water is wasted which helps conserve valuable water resources. And that’s good news for the environment. You pay only for the water you use – after you’ve used it.

In many developed countries water meters are used at each residential and commercial building in a public water supply system. Water meters can also be used at the water source, well, or throughout a water system to determine flow through that portion of the system. Water meters typically measure and display total usage in cubic feet, cubic meters or US gallons on a mechanical or electronic register. Some electronic meter registers can display rate-of-flow as well as total usage.

Water Meter Design Types

There are two major methods of flow measurement in use, displacement and velocity, with sub-technologies within each of them:

  • Displacement Water Meters – Displacement water meter is most often used in residential and small commercial applications. Displacement meters are commonly referred to as Positive Displacement water meters.
    • Oscillating Piston Water Meter
    • Nutating Disk Water Meter
  • Velocity Water Meters – Velocity-type water meter measures the velocity of flow through a meter of a known internal capacity. The speed of the flow can then be converted into volume of flow for usage.
    • Single jet (Paddle wheel) Water Meter
    • Multijet (Horizontal impeller) Water Meter – Multi-jet water meters are very accurate in small sizes for residential and smaller commercial uses. Multi-jet water meters are very accurate at low flow rates, but are not used in larger sizes.
    • Turbine Water Meters
      • Fire Water Meter – Fire meters are a specialized type of turbine meter with approvals for the high flow rates required in fire protection.
      • Fire Hydrant Water Meter – Fire hydrant meters are a specialized type of portable turbine meter that are attached to a fire hydrant to measure water out of the hydrant. Utilities often require them for measurement of water used in construction, pool filling, or where a permanent meter is not yet installed.
    • Propeller Water Meter
    • Compound Water Meter – Compound water meter is used where high flow rates are necessary, but at times there are smaller rates of flow that still need to be accurately measured.
    • Electronic Water Meters
      • Electromagnetic Water Meter – Magnetic flow meters, commonly referred to as “mag meters”, are technically a velocity-type water meter, except that they use electromagnetic properties to determine the water flow velocity, rather than mechanical means which jet and turbine meters use.
      • Ultrasonic Water Meter – Ultrasonic water meters use an ultrasonic transducer to send ultrasonic sound waves through the fluid to determine the velocity and translate the velocity into measurement of the water volume.