Rainwater Collection Roof System

Did you know the average roof collects 600 gallons 2 271 2 l of water for every inch of rainfall.

Rainwater collection roof system.

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. The good news is most roofing materials are suitable for rainwater harvesting. While metal roofing or plastic sheeting e g. Research indicates rainwater is safe for irrigating vegetables read the recent research from australia and wa dept.

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. Metal roofs provide the cleanest and most efficient surface. Microbiological quality of roof harvested rainwater and health risks. Potable rainwater collection systems utilize a variety of roofing materials as collection surfaces.

House bill 991 2011 amended the homeowners solar rights act it requires that within 120 days after a homeowners association the association shall adopt. 1 of rain on 1 000 sf roof will yield 623 gallons. Greenhouse roof has the highest collection efficiency most surfaces are a ok. There s just a short list of rooftop surfaces that rainwater harvesters should avoid.

Don t let all that water go to waste. 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. Other materials such as tile and composition shingles are successfully used. The use of toxic materials such as lead flashing for tile roofs should be avoided.

T he green infrastructure for clean water act which relates to water conservation efficiency infrastructure and management while promoting rainwater harvesting. Ahmed w gardner t toze s. Health risks associated with consumption of untreated water from household roof catchment systems. To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches.

The idea of rainwater harvesting usually conjures up images of an old farm cistern or thoughts of developing countries. External j amer water res assoc. External j environ qual. Rainwater collection calculation formulas and equations roof area ft 2 x precipitation amount in x 0 623 amount collected gallons easy formula to remember.

This means a metal roof rainwater collection system will produce water with less of the disease causing microorganisms. 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.