Plant 1
Plant 2
Plant 3
Wastewater, ready to cool data centers.
Aeromonia removes ammonia from treated wastewater before it reaches a data center's cooling system.
The problem
Cooling is moving to wastewater. Wastewater brings ammonia.
Data centers and power plants are switching to treated wastewater to save drinking water.
That water carries ammonia. It attacks copper alloys in cooling systems and feeds biofouling.
Today, sites watch a probe and adjust chemicals by hand.
This is already happening at scale.
~61 million gallons a day
of treated wastewater piped from Phoenix, Arizona to a nuclear power plant, which uses it for cooling.
750M+ gallons
of reclaimed wastewater supplied in 2025 by Loudoun Water in Virginia to about 40 customers, including data centers.
Sources: Phoenix figure, US EPA permit fact sheet (2023). Loudoun figure, Loudoun County. Ammonia and copper, US Patent 7,955,553 B2, background section.
What we build
One unit between the water line and the cooling system.
In
Treated wastewater
From the utility line.
Aeromonia
Ammonia removed, continuously monitored
Biological treatment with automatic control.
Out
Cooling system
Water arrives within spec.
Retrofit
Installs on an existing reclaimed-water line. No redesign of the cooling plant.
Biological
Ammonia is converted by bacteria instead of being managed with ever more chemicals.
Protected
Water that falls out of spec is diverted away from the cooling system.
Early results (simulated)
15–25% less aeration energy.
We ran our simulator on real wastewater data from three U.S. treatment plants and compared it with conventional control.
Results are from our simulator, which has not yet been checked against a real site, so they are not field results. The comparison is against conventional constant-oxygen control. Plant data: EPA ECHO discharge monitoring reports.
Backed by
Built at Vanderbilt, with the Wond'ry.
Vanderbilt University
The Wond'ry
Working with wastewater? Talk to us.
80+ customer and expert interviews shaped what we're building. We're looking for sites, partners and investors who want cooling water that behaves.
Email the founders