Rainwater Collection Roof System

How much rainwater can you harvest from your roof.

Rainwater collection roof system.

House bill 991 2011 amended the homeowners solar rights act it requires that within 120 days after a homeowners association the association shall adopt. 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 in washington state outlines the department of ecology s 2009 policy decision allowing rainwater collection and reuse systems and has many useful links. The good news is most roofing materials are suitable for rainwater harvesting.

Ahmed w gardner t toze s. 1 of rain on 1 000 sf roof will yield 623 gallons. Here s a handy little calculator to help you estimate how much rainwater can you harvest from your roof. 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.

External j amer water res assoc. Microbiological quality of roof harvested rainwater and health risks. 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. To use this calculator input the dimensions of your roof only area connected to rainwater harvesting system and the amount of rainfall in inches.

Metal roofs provide the cleanest and most efficient surface. Greenhouse roof has the highest collection efficiency most surfaces are a ok. This means a metal roof rainwater collection system will produce water with less of the disease causing microorganisms. 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.

There s just a short list of rooftop surfaces that rainwater harvesters should avoid. While metal roofing or plastic sheeting e g. Rainwater harvesting is legal in illinois but with two major statutes. The use of toxic materials such as lead flashing for tile roofs should be avoided.

The idea of rainwater harvesting usually conjures up images of an old farm cistern or thoughts of developing countries. Potable rainwater collection systems utilize a variety of roofing materials as collection surfaces. T he green infrastructure for clean water act which relates to water conservation efficiency infrastructure and management while promoting rainwater harvesting. External j environ qual.

Don t let all that water go to waste. Research indicates rainwater is safe for irrigating vegetables read the recent research from australia and wa dept.