The Evolution of Float Level Detection And the Key to Product Demand

Float level detection has evolved significantly over time. What began with mercury switches transitioned to mechanical floats as safety concerns and regulations changed. While each step improved on the last, challenges remain.

Today, the wastewater industry faces increasing demands for durability, and that’s why innovation in float level detection hasn’t stopped! 

Mercury Switches

Mercury switches were widely used in the industry, but they also came with serious drawbacks, as exposure to mercury can cause physical harm. It also creates environmental and disposal concerns, which is one reason regulators in the U.S. and internationally have worked to reduce mercury use in products and processes.

In practical terms, that meant mercury-based components became harder to justify in environments where reliability, safety, and compliance all matter. 

Mechanical Floats

Mechanical floats replaced mercury switches, offering a mercury-free and “safer” solution. However, mechanical floats still introduce their own set of challenges—especially in the harsh environments common in wastewater systems.

Most mechanical floats rely on internal copper wiring and electrical switching. Over time, these components are exposed to moisture, chemicals, and repeated movement. This can lead to corrosion and wire fatigue. When these failures occur, the results are dangerous and costly.

The Opportunity of Opti-Float

Opti-Float represents a different approach to float level detection. One that moves beyond traditional switching.

Opti-Float uses fiber-optic cables and light to detect level conditions. That means it delivers level indication through a technology that is both mercury-free and electricity-free.

The result is a solution built with:

  • Safe materials

  • Durable construction

  • Reduced failure points

  • Reliable performance in demanding environments

We believe the evolution of float level detection should continue toward solutions that improve safety, reduce maintenance, and perform more reliably over time.

The goal shouldn’t be to settle for a float that is simply familiar or widely used; the goal should be to invest in a solution that truly meets the demands of modern systems.

Look deeper. Ask more. Invest in better solutions.

Chris Cox