Rainwater Collection Roof System

Rainwater collection calculation formulas and equations roof area ft 2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember.

Rainwater collection roof system.

Did you know the average roof collects 600 gallons 2 271 2 l of water for every inch of rainfall. There s just a short list of rooftop surfaces that rainwater harvesters should avoid. While metal roofing or plastic sheeting e g. T he green infrastructure for clean water act which relates to water conservation efficiency infrastructure and management while promoting rainwater harvesting.

This means a metal roof rainwater collection system will produce water with less of the disease causing microorganisms. External j environ qual. Galvanized metal roofing especially is recommended for rainwater harvesting because the panels will be coated with a later of zinc which seals the metal panels prevents rusting and lowers the levels of iron in your water. Potable rainwater collection systems utilize a variety of roofing materials as collection surfaces.

Rainwater collection systems can be as simple as collecting rain in a rain barrel or as elaborate as harvesting rainwater into large cisterns to supply your entire household demand. Other materials such as tile and composition shingles are successfully used. Health risks associated with consumption of untreated water from household roof catchment systems. Here s a handy little calculator to help you estimate how much rainwater can you harvest from your roof.

Microbiological quality of roof harvested rainwater and health risks. External j amer water res assoc. Metal roofs provide the cleanest and most efficient surface. The use of toxic materials such as lead flashing for tile roofs should be avoided.

Rainwater harvesting is legal in illinois but with two major statutes. You can make a rainwater collection system for under a hundred dollars and store hundreds of gallons of water to use for your garden or other purposes. The idea of rainwater harvesting usually conjures up images of an old farm cistern or thoughts of developing countries. House bill 991 2011 amended the homeowners solar rights act it requires that within 120 days after a homeowners association the association shall adopt.

The good news is most roofing materials are suitable for rainwater harvesting. Research indicates rainwater is safe for irrigating vegetables read the recent research from australia and wa dept. 1 of rain on 1 000 sf roof will yield 623 gallons. To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches.

Rainwater collection in washington state outlines the department of ecology s 2009 policy decision allowing rainwater collection and reuse systems and has many useful links. Don t let all that water go to waste.