Comment Re:Rainwater collection from homes (or roads) (Score 1) 678
"To properly handle something like rainwater takes upfront design. Some kind of roof tank that can gravity-feed all house toilets, and outdoor hoses would be nice."
Until it springs a leak. It'd be great for construction companies repairing water damage. Insurance companies typically have rules against upstairs waterbeds just imagine what they'd think of a rooftop tank.
"As to crops, why don't they put down thick black plastic over the entire field. Then capture that water to a swimming pool sized holding tank, and pump it back out via drip/sprinkler systems to water their plants as needed. "
Because the sky provides a drip/sprinkler system already. All this would do is increase the energy consumption. The natural rainfall reduces the need for watering. If there were enough water landing on the field for the crops they wouldn't need to water them at all.
Until it springs a leak. It'd be great for construction companies repairing water damage. Insurance companies typically have rules against upstairs waterbeds just imagine what they'd think of a rooftop tank.
"As to crops, why don't they put down thick black plastic over the entire field. Then capture that water to a swimming pool sized holding tank, and pump it back out via drip/sprinkler systems to water their plants as needed. "
Because the sky provides a drip/sprinkler system already. All this would do is increase the energy consumption. The natural rainfall reduces the need for watering. If there were enough water landing on the field for the crops they wouldn't need to water them at all.