Prototype
Hardware
Modular Urban Water Purifier
By Alex Rivera · Hardware inventor · Austin, TX
Stackable cartridge system that turns rooftop rain and graywater into potable supply for dense city blocks.
WaterCitiesSensors
Problem
Urban neighborhoods still depend on brittle central water infrastructure. When mains fail or quality drops, residents have few local options that scale beyond single apartments.
Solution
A modular purification stack with swappable media cartridges, IoT quality sensors, and a shared maintenance marketplace so buildings can expand capacity floor by floor.
Seeking
Pilot partners and seed capital for first 50 building installs