challenges
For Business
Who We Are
Results
search
Get Started
I want to launch a challenge
Connect to talented problem solvers
I want to solve a challenge
Join our community to win prizes
log in
menu
log in
challenges
For Business
Who We Are
Results
Submission
Aviral Dewan
submission voting
voting is closed.
introduction
title
Waste water reused
short description
Waste water is refused.
comments
(public)
