PowerShares Water Resources ETF on the Rise

Based on the pattern that has developed since the January spike low at 16.90, the PowerShares Water Resources Portfolio ETF (AMEX: PHO) is heading for the top of its price channels into the vicinity of 21.50/70 prior to the completion of the current upleg off of the 3/17 pivot low (18.11). If rice is in short supply, what about water? I don't know if access to fresh water will be a problem next week or in another 15 years, but that day is approaching. In any case, for my purposes right here, right now, I am looking for 21.50.