Who's using rainwater for irrigation? What new technologies (filtration, collection systems, etc.) are helping you get clean water? How can you make rainwater systems work when drought is always a possibility? Tell me everything that's worked (or hasn't worked) for you.
I visited Hermann Engelmann Greenhouses in Florida a few years ago and I think they were getting setup to catch all their run off into retention ponds. The facility that I toured had one section of greenhouse that was around 5 acres of gutter connect that had all the downspouts dropping into a curbed isle inside the greenhouse at the center then it funneled the water outside to a main drainage ditch. With the Curbed walk being a least 500 ft long, I asked where the Kayaks were kept.;)