What WaterPearls do, where they fit, how savings are measured, and what we deliberately do not claim.
WaterPearls are patented, organic, super-hydrophobic beads engineered by RHST Industries. Applied as a surface or shallow-subsurface layer on soil, or floating on stored water, they form a water-repellent barrier that suppresses evaporation. They are inert and pH-neutral, and they biodegrade under UV only while exposed at the surface. Once in place they keep working on their own: no power, no moving parts, no consumables.
The water-retention system is protected by U.S. patent 9,901,043 (patent family filed since 2013, protection running to 2034).
By raising the resistance to vapour escape at the surface. On treated soil, more of each rain or irrigation stays as liquid water in the root zone instead of evaporating from bare ground before roots can use it. On open water, a floating layer suppresses evaporation from the surface.
To be precise about the mechanism: WaterPearls suppress evaporation. They do not "turn vapour back into droplets" or condense anything. The benefit is simply that less water leaves as vapour.
It depends on the surface and the site, and it is always measured against a baseline, never a fixed constant. On treated soil, the reduction in applied irrigation can reach 30–50% where non-productive soil evaporation is a large share of water use (for example, young or wide-spaced orchards); it is smaller under a full canopy. On open reservoirs, floating mats suppress 77–98% of evaporation depending on the number of layers.
We commit to establishing each figure against a measured (not modelled) baseline, weather-normalised, and verified per site.
No, and we are deliberate about saying so. Suppressing evaporation does not remove heat, and water vapour is a climate feedback, not a forcing, so it carries no CO₂-equivalent. We make no thermal-offset claim and no greenhouse-gas claim from water vapour.
The climate-relevant benefit is the water saved and the pumping energy it represents. Where a site runs on grid or diesel pumping, avoided pumping translates into a modelled, clearly-labelled avoided-emissions estimate. We never sell it as an offset or a "carbon-neutral" claim.
WaterPearls work on standing or stored water (reservoirs, basins) and on soil (orchards, vineyards, reforestation, controlled-environment growing). They are an in-basin agricultural and reservoir intervention.
They are not placed inside active cooling towers or closed liquid-cooling loops. For a data center, the water benefit comes from savings made elsewhere in the same watershed, not from any change to the facility's cooling hardware.
Under the WRIA™ model, an operator funds metered, additional, in-basin water savings (for example, irrigation water conserved on nearby farms) and accounts those savings against its own measured cooling-water consumption, following the WRI Volumetric Water Benefit Accounting (VWBA 2.0) method and disclosable under IFRS S2 and CDP Water.
A facility reaches a "water-positive" position only when the contracted, verified savings exceed its measured consumption. We present that as an outcome to be earned and verified, never as an automatic claim.
Against a measured baseline, using field instrumentation: soil-moisture sensors, and, for rigorous accounting, eddy-covariance flux towers and/or lysimetry to establish actual evapotranspiration reduction. Verification follows ISO 14064-3-style third-party review.
This is the backbone that turns a provisional figure into a reportable one. Where a number has not yet been independently verified, we say so.
WaterPearls are composed of organic compounds (primarily simple sugars) that break down under UV exposure at the surface. They are inert, non-absorbent and non-swelling, with nothing to leach into the nutrient line of a growing system.
They have a long working life under field conditions, with UV biodegradation built in as a designed end of life, not a failure mode. Shielded from sunlight under a soil layer, the beads degrade far more slowly and stay in place as a soil amendment. Service life is documented per deployment.
Yes. WaterPearls hold the Solar Impulse Efficient Solution label (2020 and 2023), Saudi Arabia's NCPD Innovative Technology Excellence Prize (2025), and a place in VivaTech's Top 400 Tech for Change (2026), alongside U.S. patent 9,901,043 and academic collaborations with UC Davis, NAIT, McGill and Mutah universities.
Tell us your context: crop, area and irrigation system; or watershed, facility load and target offset. We'll come back with the right next step: a pilot scoped against a measured baseline, a WRIA™ partnership conversation, or a licensing discussion.
