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Living on Rain

Most people in Western Countries are accustomed to turning on a tap and receiving an unlimited supply of clean, drinkable water at a cheap price. This is the basic reason more people don’t adopt rainwater harvesting on a large scale except in areas where water is not available. But the price of public water has already begun to rise and will continue to do so. Plus, some homeowner have no water options except rain.

Consider the beautiful Hill Country of Central Texas. Many people want to build homes and raise families in the Hill County. However, public water is not available in many locations, and well water quality is often so poor that it would costs thousands each year to make it potable.

Rainwater is not drinkable straight off a roof, but it can be treated with a carbon filter and made drinkable. A considerable number of Central Texas residents have chosen this option, and rain is their sole source of water. No well. No municipal water. If the rain harvesting system is well designed and constructed, the homeowner can store water indefinitely and preserve its high quality.”

In 2012, each individual Texan used an average of 83 gallons of water per day, reports the Texas Water Development Board. That’s about 17 gallons less than the national average of 100. A one-inch rain falling on a 1,000-square-foot roof will produce 600 gallons of water that can be collected and used as needed. A water-conscious family of four consumes about 100,000 gallons of water annually. Some parts of Central Texas receive 35 inches of rain in an average year, which that means that a 4,500-square-foot collection area can supply the family with its annual water requirement.