| http://www.w3.org/ns/prov#value | - Photos, from top: Jerry Block and his four water storage tanks; a detail of the Gutterglove Gutterguard, a filter that prevents leaves and other debris from entering the system; the Rain Harvesting Systems setup includes a red pipe that serves as a roof washer (a secondary filter to remove contaminants such as bird droppings) and a green pipe that delivers rainwater to the storage tank; Block le
|
