Business Green: As the number of victims from Zimbabwe’s cholera outbreak reaches 1,000, the disaster highlights the need for small-scale, low-cost water projects. Now a new non-profit project called Avko is aiming to help accelerate the deployment of water quality initiatives using a system based on the humble mobile phone. The organisation, which describes itself as an “open source” initiative, offers a service that seeks to serve as a “Wikipedia, eBay and YouTube for water and sanitation …