How To Construct a DIY Rainwater Assortment System

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“It’s been raining a lot currently 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 definitely’ve come to the best place!

Discovering DIY tutorials has by no means been simpler. From youtube movies to weblog posts, there’s an abundance of sources on the market. However not all of them are value 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 all the pieces you might want to know, from an inventory of supplies and instruments to a step-by-step course of with sketches!

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


We put plenty of work into designing, researching, writing, enhancing, and reviewing these articles. Please contemplate supporting us by making a purchase order from one of many affiliate hyperlinks included on this put up.

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Which Kind Of Rainwater Assortment System Is Finest For DIY?

Should you’ve been maintaining with our rainwater articles, you’ll know the significance of selecting a system that’s proper on 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 means that you can use the rainwater you’ve collected on your washer or dishwasher.

Remember the fact that there are different programs you should use. For instance, a extra in depth ‘moist’ system works properly for big homesteads. In any other case, a easy water barrel could be sufficient for quaint cottage dwelling.

That mentioned, in the event you’re unsure which system to decide on, we’ve made this move diagram that can assist you resolve:

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 you need 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 a couple of 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 might require permits or different laws you’ll have to observe.

Tools 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 on your 4″ PVC pipe.

You’ll in all probability want to chop your PVC pipes to dimension. A easy metal noticed could be greatest for this job.

Piping For Your DIY Rainwater Assortment System

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

The quantity of PVC piping you’ll want will depend on 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 principle pipe and the storage tank. Moreover, when connecting your gutter to the system, you’ll want an elbow to appropriate the path of water move.

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

In our design, we embrace a first-flush diverter equipment. These might be tough to construct, however fortunately we’ve discovered this equipment 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″ suitable.

These brackets will permit you to 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/House depot

550 Gallon Water Tank

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

Supply From House Depot

24″ Cement Pavers

To create a flat base on your water tank, you should use 16 x 24″ cement pavers.

To have strain 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 residence depot for the proper of piping on 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 depend upon the next components:

  • The place are your own home’s gutters?
  • How shut would you just like the tank to your own home?
  • What number of downpipes do you need to hook up with the tank?

Beneath we’ve sketched what our design would appear to be:

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

Step 1: Divert Your Gutter

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

Your gutters could 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 shall be.

We’ve used 90° PVC elbows, however you would possibly want 45° elbows as an alternative. Both choice would work — hold the dimensions 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 attach all of your connections collectively! The cement units fairly shortly, however you might want 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 perfect factor to do with the storage space is to place down cement pavers.

Inserting the pavers means that you can create a stage space. That is necessary when inserting your tank as it will probably have an effect on the water gauge.

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

That mentioned, your tank gained’t disappear underground, however it will probably displace as much as 2 inches. Whereas this doesn’t seem to be a lot, it can have an effect on your pipe connections.

After you’ve positioned your pavers, you’ll be able to place your tank. Be sure that the outlet is dealing with 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 equipment is the most suitable choice for this step. It comes with all of the elements you want aside 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 filth from the primary little bit of rain.

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

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

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

Please don’t skip this step! Should 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 just’d know precisely the place the leaf eater would go. Moreover, the diverter is already fastened to the wall, making the leaf eater set up simpler.

A leaf eater fitted to a PVC tee — DIY rainwater system.
Leaf eaters forestall 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, you might want 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 permits the water to move by means of the pipe accurately. The water will stagnate and appeal to bugs and mosquitoes if the pipe is straight.

The simplest manner 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 can depart a line on the wall that you just’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. Chances are high, the pipe you simply fastened to the wall doesn’t line up together with your tank 100% accurately.

Utilizing your 90° elbows, create a connection that can 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 can depend 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 be certain 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 stop 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 received a pressurized backyard hose.

It’s necessary to notice you could solely use this method for watering your backyard and out of doors irrigation. Another choice is to hook the tank as much as good irrigation programs.

Remaining Ideas

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

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

Setting up 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 residence.

Good luck together with your undertaking, and be at liberty to ask us any questions you will have within the feedback!


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