HydroLogics, the company behind NO-DES® (Neutral Output Discharge Elimination System), was founded in 2002 with a clear mission: Revolutionize the way municipalities flush water mains. After years of firsthand experience in the water industry, our team recognized a fundamental flaw in traditional flushing methods — the unnecessary loss of millions of gallons of clean drinking water.
Driven by the principle of conservation without compromise and delivering quality water, we developed the first Zero Discharge Flushing System — a closed-loop solution that eliminates water waste while enhancing system cleanliness and water quality. Our early prototype, a 150-psi trailer unit, proved the concept. Today, our Zero Discharge Flushing units offer advanced features, including chlorine injection during flushing, which allows utilities to disinfect and clean lines in a single pass, without discharging water into the environment.
Trusted by water districts across the country, Hydrologics is redefining best practices in distribution system maintenance with sustainability, efficiency, and public trust at the core.
The Hydrologics Zero Discharge Flushing System is the only water distribution system flushing method that improves water quality, eliminates NPDES issues, and conserves water and energy.
Hydrologics, Inc. offers comprehensive water-main flushing and rehabilitation services on a contract basis, eliminating the need for last-minute, reactive maintenance.
Hydrologics has pioneered Zero Discharge Flushing, which is superior to unidirectional flushing, and wastes minimal water while removing and capturing all contaminants.
Gallons of water saved in one year using Hydrologics ZDF*
Resident satisfaction in Hydrologics municipalities for water quality
Every component that comes in contact with distribution system water is NSF 61 Certified and approved for use in potable drinking water systems.