Water Harvesting Methods


The many methods of harvesting rainwater or greywater can be categorized into two main groups – each with its own advantages and disadvantages – Passive & Active harvesting.

Passive Harvesting: This “ultra green” approach captures and processes rainwater naturally through biological plantings on green roofs and through vegetative swales in parking areas.

Active Harvesting: Active harvesting involves mechanical means of collecting, filtering, storing and pumping harvested waters. These systems can be quite sophisticated and can provide sustained levels of water for flushing toilets and watering landscaping.

Each approach has its own set of advantages and disadvantages, costs and implications. At Water Harvesting Solutions, we often recommend a combination of approaches to maximize the utility and effectiveness of harvesting. For more information, see our pages on Selecting a System and Our Services.