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Water Filter Kit

Water Filter Kit

Build a 3-Chamber Water FilterBuild a 3-Chamber Water Filter
Watch Dirty Water Run ClearerWatch Dirty Water Run Clearer
Ages 8+ Β· STEM Science KitAges 8+ Β· STEM Science Kit
Kid-Tested & Parent-ApprovedKid-Tested & Parent-Approved
Regular price Sale price $27.95
Regular price $27.95
Sale Sold out
Happiness GuaranteeHappiness Guarantee
30-Day Returns30-Day Returns
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  • Build a DIY water filter with three clear chambers that stack into one tower
  • Layers of pebbles, sand, and filter paper catch the dirt as the water drips through
  • Kids pour in dirty water, watch it filter, and record what they see
  • Includes the chambers, a beaker, a dropper, sand, pebbles, filter paper, and instructions
  • A screen-free STEM science kit for ages 8 and up

What Your Child Builds

The Water Filter Kit turns muddy water into a real science experiment. Kids stack three clear filter chambers on a support card over a plastic beaker, then fill the layers with pebbles, sand, and filter paper. They pour muddy water into the top chamber and watch it drip down one level at a time. By the time it reaches the beaker, the water looks a lot clearer than what went in.

Science Kids Can See

Every layer is see-through, so kids can watch the dirt get caught on its way down. The instructions ask them to record what they notice, including how fast the water flows, and then try again with more or less dirt to compare. It is a simple, hands-on way to learn how water filtration works. Just remember that clearer is not the same as clean, so the filtered water is for observing, not for drinking.

Love hands-on science? Pair it with our Music Box Kit or Robotic Dinosaur Kit, or browse all of our STEM Kits.

Designed & tested with love in the USAFostering imagination and creativity, screen-free.

Designed & tested with love in the USA
Fostering imagination and creativity, screen-free.

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What's Included

  • Sand
  • Pebbles
  • Plastic Beaker
  • Water Dropper
  • 3 Filter Chambers
  • Filter Support Card
  • 4 Pieces of Filter Paper
  • Step-by-Step Instructions

Shipping & Returns

We offer fast, reliable shipping anywhere in the U.S.

  • Shipping: Orders typically ship within 2–3 business days.
  • Delivery: Expect your kit in about 5–7 business days.
  • Returns: If you’re not completely happy with your order, contact us within 30 days for an easy return or replacement.

Free shipping on orders over $49.

Our Happiness Guarantee

We want every family to love their crafting experience.
If something isn’t right, our Happiness Guarantee covers it. Reach out to our team, and we’ll make it right with a replacement or refund.
Because creativity should always come with peace of mind.

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Family-run, woman-owned
Happiness Guarantee
Kid-tested and parent-approved
Supporting Toys For Tots donations
Family-run, woman-owned
Happiness Guarantee
Kid-tested and parent-approved
Supporting Toys For Tots donations
Family-run, woman-owned
Happiness Guarantee
Kid-tested and parent-approved
Supporting Toys For Tots donations

Why Families Love the Water Filter Kit

Pebbles, sand, and filter paper stacked in three clear chambers kids can see through
Pebbles, sand, and filter paper stacked in three clear chambers kids can see through
A kitchen table experiment to run together, then run again with more dirt
A kitchen table experiment to run together, then run again with more dirt
Screen-free science, watching every drop and writing down what they notice
Screen-free science, watching every drop and writing down what they notice
Worth the wait: the water drips down slowly, one chamber at a time
Worth the wait: the water drips down slowly, one chamber at a time
Chambers, beaker, dropper, sand, pebbles, and filter paper, all in one box
Chambers, beaker, dropper, sand, pebbles, and filter paper, all in one box

More than a craft: A confidence-building experience

Practices the scientific method as kids predict, pour, and record what happens
Shows how layers of pebbles, sand, and paper trap dirt as water passes through
Builds patience and careful observation while the water drips from chamber to chamber
Starts real conversations about where clean water comes from
Boy smiling at his clear water filter tower on the kitchen table, with a jar of water beside it

See why 10,000+ families choose Pinwheel Crafts

Real smiles. Real creativity. Real connection.
  • 5 stars: 15 (63%)
  • 4 stars: 6 (25%)
  • 3 stars: 2 (8%)
  • 2 stars: 1 (4%)
  • 1 star: 0 (0%)
C
CC
Simple little experiment

My kids enjoyed doing this and I always like when there is purpose and learning behind playing.Everything you need is included with the exception of dirt and a cup. If you plan to do any other experiments, you’ll need those items too.The instructions are a little lacking I think. I’m still not 100% sure we did it as intended.I like that this is somewhat reusable, but not something I’ll have to hold onto forever.

J
Joseph G.
Disappointing

I got this kit for my 10-year old son, but unfortunately it didn’t work very well. The instructions weren’t very helpful. It just showed an image with some brief text. It didn't say how much sand to put in. It had a mention of cutting up the large filter for the third cup, which was confusing. It had smaller filters but they were too big to fit in the cups. We put dirty water in the top as it said and the water at the bottom was still dirty, albeit a little lighter. My son quickly lost interest, especially when it didn't work. There was no learning experience, just disappointment. Overall, I would not recommend this kit.

C
Cash D.
Good science fair kit

My son used this for an 8th grade science fair project. It worked well and we all learned a few things about our nasty water.

C
Clayton C.B.
Pinwheel Crafts Water Filter DIY Kit for Kids -- Educational Water Purification STEM Kit

This Pinwheel Crafts DIY Water Filter Kit includes all the necessary supplies and some kinda weak instructions.The idea is to build a water filtration system using sand and pebbles.The main issue was the smaller filters didn't fit into the containers well, so you had to kind of force them down....but you could create a functional water filtering system if you were careful.But note the kit only gives you three filters, and they get blocked up with sand after one or two uses.A great idea, and still fun and educational, but the manufacturer got a lil cheap with the parts for the kit...four stars.

K
Kaliyanei
Water filter kit

This kit made the science of purifying water so much fun for my children

A
Alexa J.
Great for Classroom!

I got this as a gift for my sister-in-law who just became a kindergarten teacher. She absolutely loved it and so did her kiddos! I love to see engaging science kits for kids on the market. In a world of mindless media, these kind of things are refreshing. Great product!

R
Rebecca L.M.
Great teaching tool for kids!

We are big fans of our Big Berkey, and our daughter was asking how it worked. We explained it to her, but when I saw this kit, I knew this would be perfect because it would make the explanation visible. This kid comes with everything you need to do this project. It is not time consuming (unless the kids REALLY get into it). It is great to explain how to filter water. This could easily be an introduction into the subject, and then turn into a project where the kids create a filtration system for their home using other tools. I highly recommend this product!

D
Drew M.
Family Fun!

I recently tried the Water Purification STEM Kit with my kids and I have to say, it was a really fun and educational experience. The kit includes pebbles, sand, three filter chambers, a filter support card, four pieces of filter paper, and step-by-step instructions.One of the things I really appreciated about this kit is that it taught my kids how water is cleaned and purified. As a parent, it's important to me that my kids understand the importance of clean drinking water, and this kit helped make that concept tangible and easy to understand.My kids love science, and this was a perfect project for them to learn and experiment. They were able to build their own water filtration system using the materials provided, and we were able to test the effectiveness of each layer of the filter using water with different levels of impurities.Overall, I highly recommend the Water Purification STEM Kit for anyone looking for a fun and educational project to do with their kids. It's a great way to teach them about the importance of clean drinking water, and it's a fun way to get them excited about science. No complaints here - we had a blast with this kit!

J
J. C.
Fun Science Project

With millions of people lacking clean drinking water, this product offers an insight, for younger children, on how an inexpensive solution, based on simple science, could help people to gain access to cleaner water.This product would be suited to someone who is showing an interest in science or wanting to find out ways to help fellow human beings.Everything pictured is found in the box.Whether you are getting this product for someone to use as a science project or for someone who is interested learning about ways to help others, this water purification project is something to definitely consider!

F
Franny
Instructions aren't clear

I did this with my grandsons ages 3 and 7. They were very interested in how it worked and were amazed by it. I was grateful that I have a science background and knew how filtering works because the instructions aren't very clear. For the price this costs, I expected more clarity, but we still had fun.

F
Froina
Just as pictured

great gift

H
Howard
Fun for the kids

This is a cool experiment for the kids to do for a weekend. We did ours with muddy creek water and it came out clear. The kids loved it!

F
FreeMamaG
Fun primitive skills craft

This little kit will amaze your kids at the simplicity of creating clean drinking water with a fun and easy activity.

J
Jackson
It's a good experiment template

This is a good kit to get one, maybe two kids going with if you were going to show a water filtration experiment. It includes everything you need, but its a bit sparse on the instructions, so if you're not sure of what you're doing, look up YouTube videos about making "survival" or "homemade" water filters.

K
Kennith J.
Great kit

This is a great little kit to teach about water filtration. It comes with everything but the dirt and water. It even has a chart for kids to record their observations. It has two different experiments for children to do. One is for cleaning dirty water, the other is for water that can not be filtered. It is very easy to use for small children. My son is five and setting this up and using it was so easy.

S
S6Mom
Great gift for STEM loving kids

This kit is fun and educational. This would make a great gift for STEM lovers and those learning about water related topics. Easy to use while learning at the same time.

A
Anonymous
Great Experiment

This was a really fun experiment for my elementary aged homeschooler. He really enjoyed doing this. He is in 1st grade and this was easy for him to understand. We both recommend this set!

D
DisneyDenizen
BASIC SCIENCE PROJECT KIT

This water filtration kit comes with everything you need. Instructions are clear and well written. An observation sheet is included.Fun. Simple. Straightforward. Enjoyable.Older children should be able to manage this kit on their own.

C
CrazyStickerLady
Grand kids had fun making a mess!

The Pinwheel Crafts Water Filter Kit comes with supplies and instructions. It includes a water dropper but there weren’t any instructions which included it’s use. The grand kids had fun filling it up with the sandy water and squirting it out again. There was also a large filter that we didn’t use.The small filters were difficult to get to fit into the containers. In order for them to filter properly you have to push them all the way down. The image on the box shows funnel shaped filters that fit into the containers. Those would have been so much better. The kit only includes three filters and they become clogged with the sand so you can’t really use them more than once.Sand is included with the kit but didn’t really mix well into the water. There were also a few pebbles but no instructions as to what to do with them. We added them to the sand and poured them into the system.The grand kids were interested and we could see the filtration process as the bottom container was less dirty than the top one. They wanted to try it a second time but the filters were so clogged by the sand that the water quit going through them. Although they had fun and learned a little, I don’t feel the value of the kit is worth the price. It would be better if more filters were included so the suggestions for using other materials could be implemented.

H
Hitswater
Perfect for homeschool

This is a perfect homeschool science lesson and the kids all loved it and was engaged

M
Mom
This is a cool experiment.

We got this to do with my grandsons.It arrives in a box, ready to use.It comes with directions that are clear and easy to use.It seems to be made well.Everything works together to create the purify system.We love that they will know how to clean their water if they were ever in an emergency situation.We would buy this again.

O
Olexia D.
Interesting

I would order this again, it was the perfect science project to go along with the recycling theme for children. Wish it had more to it but it was worth the engagement

A
Abigail F.
Works

Nice

G
Gail H.
Great Science Project for Homeschooling

I ordered this for 8 year old who's homeschooled. He really enjoyed it and learned something.

STEM Focused
STEM Focused
Woman-Owned
Woman-Owned
Non-Toxic
Non-Toxic
Eco-Friendly
Eco-Friendly

Questions parents ask

What's included in the Water Filter Kit?

Sand, pebbles, a plastic beaker, a water dropper, 3 filter chambers, a filter support card, 4 pieces of filter paper, and step-by-step instructions.

How does the water filter work?

The three chambers stack into a tower over the beaker, held steady by the support card. Each layer catches some of the dirt. Pebbles stop the bigger bits, the sand traps finer grit, and the filter paper catches more on the way down. The instructions ask kids to compare the water in the beaker with the mix they poured in, and to watch how fast it flows.

Is the filtered water safe to drink?

No. The instructions describe the water in the bottom beaker as clearer than the dirty mix, and they never call it drinkable. Clearer is not the same as clean, and a classroom filter like this is not designed to remove germs or chemicals. Pour the water out when the experiment is done.

What ages is it best for?

It is recommended for ages 8 and up. Younger scientists can join in with a grown-up helping to stack the chambers and pour.

Is it safe for kids?

Every Pinwheel Crafts kit is CPSIA compliant, which means it meets the US federal safety requirements for children's products, and this kit conforms to ASTM D-4236, the US labeling standard for art materials. It contains small parts, including the pebbles, so it is not for children under 3. The experiment uses no heat. The filtered water is not for drinking.

What do kids record?

The instructions ask kids to watch the water move through the three chambers and write down what they notice, including how fast it flows. Then they compare the water in the beaker with the mix they poured in, and try again with more or less dirt to see how the results change.

Can kids run the experiment more than once?

Yes. The chambers and beaker rinse clean, and the instructions suggest trying different amounts of dirt to compare the results. The kit comes with 4 pieces of filter paper, and paper that clogs with sand will slow the flow, so it is worth rinsing the chambers between runs.

Is it good for homeschool or the classroom?

It makes a simple, hands-on science lesson on water filtration, with something to watch and something to record. Each kit builds one filter, so for a group, plan on one kit per team.

Boy in a red T-shirt at the kitchen table watching his water filter tower, a jar of water beside it

Perfect for homeschool science, rainy afternoons, or a gift for curious kids

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Free Shipping Over $49
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Family-run, woman-owned
Happiness Guarantee
Kid-tested and parent-approved
Supporting Toys For Tots donations
Family-run, woman-owned
Happiness Guarantee
Kid-tested and parent-approved
Supporting Toys For Tots donations
Family-run, woman-owned
Happiness Guarantee
Kid-tested and parent-approved
Supporting Toys For Tots donations