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How To Construct a DIY Rainwater Assortment System

“It’s been raining a lot these days and I’m letting all of it go to waste. Perhaps it’s time that I construct a DIY rainwater assortment system?” Sound acquainted? Then you definately’ve come to the proper place!

Discovering DIY tutorials has by no means been simpler. From youtube movies to weblog posts, there’s an abundance of assets on the market. However not all of them are price following.

Thankfully for you, we’ve put our skilled data to make use of and crafted an easy-to-follow DIY rainwater assortment system information!

We break down every part it’s essential to know, from a listing of supplies and instruments to a step-by-step course of with sketches!

By the top of this submit, you’ll be greater than geared up to construct your individual rainwater assortment system and reap the entire advantages these methods have to supply!


We put a number of work into designing, researching, writing, modifying, and reviewing these articles. Please take into account supporting us by making a purchase order from one of many affiliate hyperlinks included on this submit.

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Which Kind Of Rainwater Assortment System Is Greatest For DIY?

In case you’ve been maintaining with our rainwater articles, you’ll know the significance of selecting a system that’s proper in your wants. In our opinion, although, we consider that the perfect DIY assortment system is a ‘dry’ system.

A dry system is environment friendly and efficient for watering your backyard and off-setting your family water consumption. As well as, it lets you use the rainwater you’ve collected in your washer or dishwasher.

Take into account that there are different methods you need to use. For instance, a extra in depth ‘moist’ system works effectively for big homesteads. In any other case, a easy water barrel can be sufficient for quaint cottage dwelling.

That stated, when you’re unsure which system to decide on, we’ve made this move diagram that will help you determine:

A chart that'll help you determine the best rainwater system for your needs — DIY rainwater system.
You should utilize the above chart to find out which system it is best to use.

Why We Selected A ‘dry’ System

A dry system is flexible in dimension and capability. It’s environment friendly sufficient to water your backyard with out having to cease midway since you’ve run out of water.

It’s additionally a simple DIY system that requires just a few components; you’ll be able to set it up in a day or two.

Right here’s the factor with our design — it’s nice for watering your backyard however not for family use. There aren’t sufficient filtering units on this system to make use of your water inside.

Moreover, utilizing the rainwater inside could require permits or different rules you’ll have to comply with.

Gear Wanted To Construct a DIY Rainwater Assortment System


drill for grey water system

You’ll want an influence screwdriver/drill to repair the brackets to the partitions and the pump to the bottom.

Some tanks don’t include a gap gap or a too-small gap. You’ll want a gap noticed to drill a gap in your 4″ PVC pipe.

You’ll most likely want to chop your PVC pipes to dimension. A easy metal noticed can be finest for this job.

Piping For Your DIY Rainwater Assortment System

PVC cement is used to connect the PVC pipes collectively, making them watertight.

The quantity of PVC piping you’ll want is dependent upon how far-off your storage tank is away from the gutters. Do not forget that PVC pipe is straightforward to chop to dimension.

You’ll use PVC elbows to divert your water from the primary pipe and the storage tank. Moreover, when connecting your gutter to the system, you’ll want an elbow to right the course of water move.

The ball valve will likely be used to cease water move out of your tank to the pump.

In our design, we embody a first-flush diverter package. These may be difficult to construct, however fortunately we’ve discovered this package on Amazon!

The leaf eater will cease any particles from getting into your system. Be sure you select one that matches your pipe dimension. This one is each 3″ and 4″ appropriate.

These brackets will will let you repair your PVC piping to the wall. The variety of brackets you want will rely in your DIY rainwater assortment system.

Storage Space

Supply From Producer/Dwelling depot

550 Gallon Water Tank

We used 400w photo voltaic panels on this mission as a result of they’re an impressive stability between yield and worth.

Supply From Dwelling Depot

24″ Cement Pavers

To create a flat base in your water tank, you need to use 16 x 24″ cement pavers.

To have stress in your backyard hose, you’ll want a booster pump.

Please keep in mind that you’ll want additional piping to attach the pump to your storage tank. Seek the advice of your nearest house depot for the proper of piping in your system.

How To Construct A DIY Rainwater Assortment System (Step-By-Step)

Now that we’ve lined the supplies and instruments that we’ll want, we will begin to design and plan our system.

Your design will rely upon the next elements:

  • The place are your private home’s gutters?
  • How shut would you just like the tank to your private home?
  • What number of downpipes do you wish to connect with the tank?

Under we’ve sketched what our design would appear like:

Sketch of a DIY rainwater collection system.
Right here is how our design seems to be.

Step 1: Divert Your Gutter

Step one on this DIY rainwater assortment system is to divert your gutters.

Your gutters may have current downpipes. You’ll have to take away these and join your PVC elbows. Then, use your PVC pipes to direct the water to the place your first-flush system will likely be.

We’ve used 90° PVC elbows, however you would possibly want 45° elbows as a substitute. Both possibility would work — maintain the scale of your PVC piping in thoughts.

For instance, our piping is 4″ in diameter, so that you’ll want a 4″ elbow.

Moreover, you’ll want to chop your PVC piping to dimension. Make use of the metal noticed and a workbench to chop your pipes.

Use the PVC cement to connect all of your connections collectively! The cement units fairly shortly, however it’s essential to permit it to dry over 24hrs earlier than wetting the pipes.
A PVC Tee being fitted to a 4" PVC pipe — DIY rainwater system.
The sketch exhibits a PVC Tee fitted to a 4″ PVC pipe.

Step 2: Place Your Water Tank

Within the preliminary design, you discovered a spot to place your tank. The very best factor to do with the storage space is to place down cement pavers.

Putting the pavers lets you create a stage space. That is essential when putting your tank as it could actually have an effect on the water gauge.

You should utilize river sand to stage the realm out or use soil out of your backyard. Be sure you compact the bottom; in any other case, your tank could sink over time.

That stated, your tank received’t disappear underground, however it could actually displace as much as 2 inches. Whereas this doesn’t appear to be a lot, it’s going to have an effect on your pipe connections.

After you’ve positioned your pavers, you’ll be able to place your tank. Make sure that the outlet is going through away from the wall and that your inlet is near the wall.

Step 3: Join Your First-Flush To The Assortment System

Shopping for a first flush package is the best choice for this step. It comes with all of the elements you want apart from the PVC pipe.

To put in the primary flush, take a three-foot PVC pipe and join it to the tee utilizing PVC cement. Then, place the ball into the PVC pipe and screw on the cap.

The ball float will rise when the pipe fills with water, rerouting the water into the tank. The primary flush collects mud and different dust from the primary little bit of rain.

Repair the piping to the wall utilizing the U-brackets within the package.

Congratulations! You’ve simply put in a primary flush onto your DIY rainwater assortment system!

How a first-flush diverter works — DIY rainwater system.
We sketched out how a primary flush diverter works. That is how we put in the diverter — you’ll be able to place it in several methods.

Step 4: Set up The Leaf Eater Onto The First Flush Part

Set up a filtration system. On this design, we’ll use a leaf eater.

The leaf eater will likely be connected to the PVC pipe that results in the diverter — the water will filter by way of the leaf eater first, then it’ll move by way of the diverter.

The leaf eater will catch all the massive particles out of your gutters earlier than getting into the remainder of the system.

Please don’t skip this step! In case you don’t filter the water, leaves, and twigs will get caught within the diverter or, worse, in your tank.

We constructed the diverter first so that you simply’d know precisely the place the leaf eater would go. Moreover, the diverter is already mounted to the wall, making the leaf eater set up simpler.

A leaf eater fitted to a PVC tee — DIY rainwater system.
Leaf eaters stop leaves and twigs from getting into the system. The above sketch exhibits a leaf eater fitted to a PVC tee.

Step 5: Divert The Water To Your Tank

Subsequent, it’s essential to connect a PVC pipe to your wall to connect the diverter to your storage tank.

You’ll want to repair the pipe at a slight angle — this enables the water to move by way of the pipe appropriately. The water will stagnate and appeal to bugs and mosquitoes if the pipe is straight.

The simplest method to do that is with a chalk line. Set one finish of the road the place the outlet pipe of the diverter is and the opposite the place the tank is. Pull the string again and snap it onto the wall. This may go away a line on the wall that you simply’ll use as a reference.

Utilizing the U-brackets, connect your PVC to the wall. Use PVC cement when connecting the pipe to the first-flush tee.

For each 12 inches horizontally, the pipe must drop 4 inches in top.

Step 6: Join The Piping To Your Tank

By now, you’ve put in 90% of your system!

All that’s left is to attach the pipe to your storage tank. Likelihood is, the pipe you simply mounted to the wall doesn’t line up together with your tank 100% appropriately.

Utilizing your 90° elbows, create a connection that may span out of your PVC pipe to your storage tank.

Use PVC cement to repair all of the pipes collectively and permit them to dry for 24hrs earlier than utilizing water.

We used 90° elbows to connect our pipe on the wall to the storage tank — DIY rainwater system.
We used 90° elbows to attach our pipe on the wall to the storage tank.

Step 7: Set up Your Pump

The ultimate step of making the system is to put in your pump. This may rely upon the kind of pump you’ve gotten and the tank’s outlet.

Nonetheless, one common step is to put in a ball valve between the tank and the pump. Moreover, you’ll want to put in one between the pump outlet and your hose becoming.

The ball valves make sure that the water system is air watertight and prevents any leakages.

You’ll use the ball valve by the tank to cease water from getting into the pump. You’ll use the second ball valve to forestall water from getting into the hose.

Connect a pump to your rainwater storage tank using ball valves and flexi-pipes — DIY rainwater system.
Join a pump to your rainwater storage tank utilizing ball valves and flexi-pipes.
Supply: Mica

Step 8: Join And Water

That’s it! You’ve accomplished a DIY rainwater assortment system!

Hook up your hose to the system, activate the pump and open the ball valve, and presto! You’ve obtained a pressurized backyard hose.

It’s essential to notice that you would be able to solely use this technique for watering your backyard and outside irrigation. An alternative choice is to hook the tank as much as sensible irrigation methods.

Last Ideas

Constructing a DIY rainwater assortment system isn’t a simple feat, neither is it troublesome; it’s the right mission for an intermediate handy-person.

The mission is comparatively low-cost in comparison with different rainwater methods, and it’s environment friendly! Working the pump will use power, however you’ll be able to energy it with a photo voltaic panel.

Establishing your individual rainwater accumulating system will prevent cash and cut back stormwater runoff.

Moreover, it’s a simple step to take to show your home right into a sustainable and eco-friendly house.

Good luck together with your mission, and be happy to ask us any questions you might have within the feedback!



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