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Well Water Holding Tanks

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Water Well Systems, Well Water Holding Tanks – Level Sensors & Controls


Never replace a float switch again!


Well Water Holding Tanks For you and your family, the safe and accurate control of the holding tank water level makes the difference between having running water for your home and not having it. Waterline Controls, with over 20 years of experience, makes the products you and your family can count on and provides a Lifetime Limited Warranty with all of its units. The liquid level sensors we use are low-voltage and low-ampere, and greatly reduce the chance of injury due to electrical shock during installation or maintenance. Unlike a great deal of our competitors, our well water holding tank sensors are designed for use in water, resulting in little or no need for calibration during the install. There’s no service fee for water level switch installation. At Waterline Controls, we are confident you’ll find our products safe and easy to install yourself. If you do have questions, we’re available at 888-905-1892 to walk you through the installation process.

The water level sensor of your water holding tank is an essential component. If not repaired or replaced, a sensor can become damaged over time and fail entirely. Too much water can cause a malfunction and too little water means inadequate water pressure. Either way, repairing or replacing holding tanks is an expensive task you shouldn’t have to undertake because of sub-par sensors. With Waterline Controls’ water holding tank level sensors, there’s nothing to break down or rust and our models have a 99% success rate! In the high unlikely event that you experience any issues with your product, call us and we’ll replace or repair it immediately at no charge.

Our level sensors and controls aren’t just for use in residential water holding tanks; some models are suited cooling towers, boilers and building fire water tanks. We can accommodate businesses and properties with dozens or even hundreds of apartments or condominiums. If there’s a water tank, there’s a need for a level sensor, so quality is crucial. All of our products, whether level controllers or liquid level sensors, are made in our US-based facility, where we monitor every step of the manufacturing process. We are confident in the lifetime warranty we offer and guarantee all product satisfaction. In fact, many of our first models, developed in the 1980s, are still in use today! With our well water holding tank sensors you will never have to replace a float switch again!

Additional Information


Enclosure: 8-3/4” X 10-1/2” X 6” including the hinge and the latch. For indoor and outdoor use.

Sensor assembly: 3” diameter up to 12 feet long.

Electrical: Controls operate at 5HP at 220VAC Internal Relay Contacts rated 40AMPS at 250Volts Dry Contacts, if used, are rated 0.5AMPS at 60Volts.

The Sensor is Intrinsically Safe.

  • Model: WLC-WS3000

    Model: WLC-WS3000

    Fill Only With Diagnostics-Complete Kit Includes Sensor With 50 ft. Sensor Wire, The Controller, and Mounting Assembly.
    Fill Only | SINGLE-CONTACT POINT | Custom Sensors lengths available upon request | 4-wire Dry contacts to BMS for measuring Fill “ON” time and fault conditions.
    Operates any 5HP pump or less. (Not supplied in this kit)

    Water level control: Water level controls for well water holding tanks
  • WLC-WS4500

    WLC-WS4500

    WLC-WS4500 – Fill w/ Low Alarm – Electronic Water Level Control | Kit Includes Controller Only | Fill w/ Low Alarm | THREE-CONTACT POINT SYSTEM | 6-wire Dry contacts to BMS for measuring Fill “ON” time, Low Water Alarm and fault conditions. () Operates any 5HP pump or less. (Not supplied in this kit.)

    Water Well Holding tank installation: This is the best product for the best price and included building management connections so the unit can be seen remotely-no more hassles!
  • Model: WLC-WST4500

    Model: WLC-WST4500

    WLC-WST4500 – Fill w/ Low Alarm – Electronic Water Level Control | Complete Kit Includes adjustable Sensor With 50 ft. Sensor Wire, Controller, and Mounting Assembly | Fill w/ Low Alarm | TWO-CONTACT POINT SYSTEM | Custom Sensors lengths available upon request | 6-wire Dry contacts to Building Management System (BMS) for measuring Fill “ON” time, Low Water Alarm and fault conditions. () Operates an internal 24vac transformer to power a 24vac valve (Not supplied in this kit.) and 1 high voltage relay for the low alarm.

    Fire Protection tank Level Control with Low Alarm: This controller has silencer alarms fill switches and complete connections to Building Automation System so you can electronically see what the tank is doing.
    Water level controls for fire protection tanks: There are a variety of units for this application. We make the most advanced liquid level controls for this application then any other product in the market. It is provided as a kit