Well, the proverbial how long ...

Well, the proverbial how long is a piece of string? Not trying to be cynical, but the first ten units of 50 gallons per day cost me about $10,000 each. I wasn't interested in selling, I was donating to an NGO. Give me some capacity, and location, I can help you design. As far as the components go, they are all off the shelf, extremely commoditized, price competitive. I anticipate you will find this affordable to do. What we have found is most developing countries have microfinancing available. The village elders can be responsible for the payment. In my endeavours in Pakistan, the default rate over 5 years was