Shower Wall Water Collector




With this easy to build and inexpensive addition to your shower, you can save water without having to do any work! It saves four ounces of water for an eight minute shower and even more if you use a squeegee.

Step 1: Buy Equipment

You Will Need:

Duct Tape - 1 roll

½” Plastic “J” Bead - (as needed for shower dimensions)

¼” Plastic Tubing - 1'

Waterproof Plastic Container with top - 1

Step 2: Build It!

1. Mesure your shower wall dimensions (not door)

2. cut plastic J molding to fit each wall

3. Angle the side wall J moldings towards the back wall of your shower

4. Repeat for any and all walls except the back wall

5. Cut last piece of J molding in half

6. Attach both pieces to back wall beneath previous piece in a V shape.

7. Tape them together at the middle and make round hole for tubing

8. Insert other end of tube into container with lid on

9. You are ready to save water!

Step 3: What to Do With Your Saved Water

Really you can use it for anything, except drinking!

Some suggestions I have are watering your garden, lawn, or potted plants.

You could even pipe it into your toilet for flushing.

Just remember, DO NOT DRINK IT!(really)



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    7 Discussions


    1 year ago

    Should be nice if you wrote that step 3 was not in the original instructable.

    Now it looks like some people are stupid, because they asked what for you use it.

    How do you want to pipe it tp the toilet? In most cases the toilet is in the same bathroom, so you need a pump to get it op from the floor to the cistern.

    And if you pipe it to your toilet, the valve in the cistern is stucked within 2 weeks.


    1 year ago

    Grey water from showers and kitchen sinks makes tremendously good irrigation water. The phosphates from the soap, and the decaying sloughed skin and food particles add up to a high quality, but not too "hot" fertilizer. One should avoid using bathroom sink water, though, as many shaving/hygiene products are not that beneficial to plant growth.

    If you're renting your home, this may be the only way to harvest grey water...but if you own your place, its much easier to just divert the drainpipe.


    1 year ago

    HUH?!?!? What for? You need to make a better explanation of what this is for. This is incomplete.

    1 reply

    Reply 1 year ago

    It seems to be a gutter system, attached around the walls of the shower, to capture the water that splashed onto the wall before it goes down the plughole. This is the "saved" water.

    Squeegeeing the wall down will knock off the remaining water into that gutter.

    The gutter has a low-point at the far side of the picture to run the water out through a pipe into a container.

    I was busy trying to work out where all the bubble wrap comes into it ... and realised that's some kind of non-slip matting, not part of the instructable :)


    1 year ago

    Water for the plants?


    1 year ago

    #metoo: don't understand how it works and how you save water with it.

    8 minutes of showering???? If you shorten that to 3-4 minutes you save a lot more water! (and time)


    1 year ago

    How is this helping you save water? Are you pouring it back on your head?? if you're collecting it to use elsewhere then that's different however with soap suds you'll be limited as to where you can use it...please explain further the concept behind this