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*Zero-lot-line developments such as condos or dense urban infill, or conversely  
*Zero-lot-line developments such as condos or dense urban infill, or conversely  
*Projects with extensive gardens and landscapes which would benefit from free irrigation water.}}
*Projects with extensive gardens and landscapes which would benefit from free irrigation water.}}
<strong>The fundamental components of a rainwater harvesting system are:</strong>
'''The fundamental components of a rainwater harvesting system are:'''
*the catchment area where the rain lands (e.g. rooftop),
*the catchment area where the rain lands (e.g. rooftop),
*a screen or filter to remove coarse debris (mostly leaves),
*a screen or filter to remove coarse debris (mostly leaves),
*a cistern which will store the collected rainwater and preserve its quality,
*a cistern which will store the collected rainwater and preserve its quality,
*the connecting pipe network including roof drains.
*the connecting pipe network including roof drains.
<strong>Additional components may include:</strong>
'''Additional components may include:'''
*pumps to lift water to higher elevations, depending on the layout of the components,  
*pumps to lift water to higher elevations, depending on the layout of the components,  
*additional water filtration and treatment, depending on the intended use of the water.
*additional water filtration and treatment, depending on the intended use of the water.

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