Learn These Crucial DIY Rainwater Collection System Techniques TODAY!

Interested in a DIY rainwater collection system? Well lucky for you, you're not alone. Rainwater has become a popular water source alternative in recent years. So we've collected some of the most important techniques so you can build a DIY rainwater collection system yourself

What Are the Benefits of a Rainwater Collection System?

Rainwater collection has many benefits. To start, it's environmentally friendly. It stops hundreds of gallons a year of water waste. Also, it helps to prevent stormwater runoff from entering sewers and local ecosystems. Plus, rainwater is unchlorinated, making it perfect for watering plants.

Another benefit is how cheap and easy it can be to install a system on your property. Most of the items you'll need are easy to find and cost-effective. Making it a great investment towards overall home care. In fact, one of the most important parts of this system are gutters. A feature which most homes should already have.

Rainwater harvesting can also be helpful if your property is having drainage problems. Flooding can be detrimental in certain areas of the country. Also, by alleviating one of the main drainage issues of a home. You can save hundreds if not thousands of dollars by preventing property damage.

Oatey Mystic™ Rainwater Collection System
  • Directs rainwater drainage from downspouts into collect...
  • Fits standard 2 in. x 3 in. residential downspouts
  • Made of UV-resistant material and can be painted

There's also the added benefit of bringing down the price of your water bill. DIY rainwater collection can replace tap water. In everything from your washing machine to your sprinkler system. Rainwater is perfectly safe for most household chores. Leaving tap water use to a bare minimum.

Is It Illegal to Harvest Rainwater?

water container

Image via Pixabay

Certain states carry restrictions. But it is not illegal to harvest rainwater so long as you follow these laws. Most of these restrictions concern the water's usage (i.e. potable vs non-potable).
Also, occasionally only require the acquisition of a permit. There are several states that don't have restrictions at all. Even more that encourage the practice.

While several states encourage rainwater harvesting. There are also many that have incentive programs. These programs can significantly improve your investment. Even help you earn extra income. Either way, you should always check with your local legislature. If you plan on getting a DIY rainwater collection system.

DIY Rainwater Collection 101

rain gutter

Image via Pixabay

Is My Location Right for Rainwater Collection?

Not all regions are a great fit for a DIY rainwater collection system. Especially if you're worried about your investment in the system being worth it. The most important thing to keep in mind when considering. This is the average rainfall where you live.

Certain regions receive more rainfall than others. The best locations being the eastern U.S. and northwest coast. While regions like the southwest receive substantially less. It is important to remember, though, that a relatively dry climate might.

Also, be the reason a collection system is right for you. Storing rainwater in places where drought and water restrictions. Are common can be very beneficial.

Outsunny 60 Gallon Collapsible Rain Barrel,...
  • LARGE WATER CAPACITY: Save water and money by collecting up...
  • PREMIUM MATERIAL: Made from PVC material, this rainwater...
  • FUNCTIONAL DESIGN: The whole frame is supported by 6 poles...

Another variable to keep in mind is the year-round temperatures of your area. Freezing temperatures can often halt access to your rainwater collection. Furthermore, turn your low maintenance system into quite a hassle.

Storing a wa​t​er tank below the frost line of your property can fix this. But it might significantly increase the cost of your DIY rain collection.

Which Collection System Is Best?

Depending on your needs and what you're willing to put into your DIY rainwater collection, there are several system options. The first and most common is a 50 to 100-gallon rain barrel. Widely available, easy to set up, and rarely in the way, this option fits most if not all homes.

The next option, commonly known as a “dry” system is essentially the same as a rain barrel, but with a few key differences. If you find that 50 to 100 gallons isn't enough for you harv​e​st needs, you can upgrade to a much larger tank for relatively cheap. 

The only issue with this is that the tank needs to be located close to your house, often putting it in the way of things or turning it into an eyesore.The third option remedies the issues of the dry system by moving the tank away from your house and connecting it through a series of underground pipes. 

Designing Rainwater Harvesting Systems:...
  • Hardcover Book
  • Novak, Celeste Allen (Author)
  • English (Publication Language)

This is commonly referred to as a “wet” system, because the tank's inlet elevation must be slightly below the gutter elevation of your home to move the water freely through the pipes.

Unfortunately, this piping can add extra cost to your DIY rainwater collection, so it may not be for everybody.

What Else Do I Need to Complete My System?

Aside from the tank (and piping if you choose a wet system), the most important thing you'll need is a pump. These generally aren't necessary for rain barrels as gravity can do most of the work, but it really helps with the bigger tanks.

Pumps aren't too hard to come by as they're already commonly used in pool systems, but you'll want to make sure you're looking for one with the right power for your needs.

High PSI output is important for good water pressure; just make sure you don't get a pump that draws too much power from your home's electrical system.

A final piece of equipment to keep in mind is a screen or proper lid for your tank. Leaves and all sorts of debris from your gutters and drainage can make their way into a tank.

This can cause blockages in the tank's output or even damage a pump, so make sure to keep your DIY rainwater collection system clean of clogs from the get-go.


DIY rainwater collection is a great way to conserve water, save money, and keep your house and home ready for several challenges.

While rain harvesting is an old technique, modern tools and knowledge have made it easier than ever to turn your property into a water-efficient one.

Keep these tips in mind as you figure out what works best for your own system and enjoy all the benefits that come with it!

Last update on 2021-07-16 at 15:44 / Affiliate links / Images from Amazon Product Advertising API

Show Your Friends!
Bailey Longhurst

I am amazed every day by the beauty that this world provides for us and think it is important to preserve it! Taking care of ourselves and our earth is crucial and I want to help people discover new ways to do both. Publishing for Green and Growing is a unique way that I can get my message across, and I hope you all enjoy what we write about!

Click Here to Leave a Comment Below 0 comments