I’ve been working on a new project to collect rainwater. Call me crazy, but getting huge plastic tanks for this is a long-time dream come true. Here’s what I did:
- Identify an appropriate spot for a 300-gallon IBC tote (a cube container with 3.5-feet long sides). It should be under a rain gutter downspout that gets good flow, and somewhat out of view to reduce the eyesore (ie do not block windows).
- Obtain two IBC totes from Craigslist. Request delivery (these won’t fit in an SUV). Make sure they are food-grade/food-safe and did not formerly contain toxic chemicals. Water collected in these totes will be used to irrigate vegetable gardens and provide drinking water for chickens. Seller confirmed they are from a dishwashing business and are safe to use.

- Clean the inside of an IBC tote (or ask seller to do so) with a pressure washer. Empty out the water. Make sure the spout works.
- Obtain & use a T30 star driver bit to unscrew and remove the top two metal bars of the cage. DeWalt bits are good quality. T30 star bolts are standard on IBC totes. You can look for the letter “T” on the bolt to check.

- Remove plastic tote from the metal cage.
- Set newspaper or cardboard under the plastic tote. Wear a mask to reduce inhalation of paint fumes. Paint the plastic tote so that it is opaque, which will inhibit algae growth. Look for lighter areas & thoroughly coat with paint until light doesn’t shine through. Using “Rustoleum Comfort Grip” or a similar product is optional but makes extended spray paint sessions significantly more comfortable for the hands.
I used 3 spray paint cans of “Rustoleum 2x Satin Finish” in color Colonial Red to fully coat one tote, and the red color will make the tote blend in slightly with the red brick of the house. I also got the same spray paint in “Claret Wine” (a slightly darker, purpler tone) for the second tote. This one requires 5 cans to fully coat. Who knew some colors take more quantity to cover a surface than others.


- Let the opaque painted tote cure and dry under a covered, sheltered area for 3-4 days. The longer the better.
- Set up cinder blocks around the base of the IBC tote’s designated location. 6 blocks set edgewise (so holes are facing up, not the sides) sufficiently form the perimeter. The IBC tote spout is very low so raising it up on blocks will give height clearance to fill a jug and let water flow down hose by gravity better.
- Insert plastic tote inside of tote cage. Set up tote on top of cinder blocks. Even with 2 people, the tote is heavy!

- Cut wire mesh screen (the kind used for window screens) and place over the top opening of the tote. Cut a little bigger than needed. Secure with the ring-lid or bands. This screen is fine enough for most debris, and mosquitos cannot enter through the holes and lay eggs in the collected water. (The biggest enemy will be algae. An occasional pressure wash inside will help).

- Set up rain gutter downspout to flow into the tank through the screen. Pour a jug of water down the spout to test that the downspout is positioned well, secure, and water flows into the screen.
- Set up an overflow system in case the tote fills up. For example, drill a ~1″ hole on the side, near the top, with a hose through this hole that goes out several feet away from the home and foundation.
- The IBC spigot is very large and does not fit standard hoses. Set up a coupler and standard hose-size brass spigot.
- Enjoy collecting and using rainwater! It’s better than city-treated water for watering plants because it has dissolved oxygen and is not treated with chemicals like chlorine and fluoride. This is better for the garden. Total cost including tools was about ~$336 and there are city rebates available. After the initial set up, it also means a free supply of water!









