The rain harvesting concept is growing because of the increasing concern for water in drier climates. Because this industry is still new, there are a lot of theories published to convince people to harvest more rain water. In fact, there are still a lot of government grants available to help encourage residents to collect water when it rains. After conducting a lot of research, I have located four fact-based reasons why rain harvesting is important.
Although you will find a lot of other smaller benefits such as rain water being better for plants, I believe these 4 reasons are based on facts and will make a difference.
Interesting Fact: If your roof is 2,000 square feet and you have 30" of rain in a year, you can collect 37,400 gallons of water.
Interesting Fact: The average person uses 80-100 gallons of water per day. If you have collected 5,000 gallons of water, you can take care of 3 people for about 15 days.
Interesting Fact: If your roof is 2,000 square feet and you have a 3" rainfall, that is 3,740 gallons of water that has to flow somewhere once it comes off your roof. If you do not have gutters installed, this amount of water can cause a lot of trouble.
Interesting Fact: If you have to run a water softener because your city water is too hard, you can spend up to $3000 for installation and $15 per month for the salt. In the first year, this is a total of $3180.
After analysing these 4 practical reasons to harvest rainwater, it is obvious that they all lead back to saving money. Although the amount you save per year may not seam massive, over five years it adds up very quickly. I hope these reasons help you understand the importance of collecting rainwater when you can.