Gravity Fed Water Bin

Since I garden in a community plot, I can't install anything permanent in my garden. I also share one spigot with twenty other people, so at the end of the day, we all want to water, but must take turns. Most of us have used trash cans or the like to store water and then water by hand, but last year, I decided I really like the even application I get from a sprayer nozzle.

Since this is on wheels, I should be able to move it easily. In the spring, I'm going to use it to move compost packages from the parking lot to the garden. When it's filled with water, it will be too heavy to steal and I can water at my leisure. In the winter, I can load it with my garden tools, cedar planks, arbor materials, and planters in it and wheel the whole thing out of the garden. Less expensive than a garden cart and much more useful.

As a secondary theft measure, I may use a couple of long shank padlocks to fasten the hose to the bin. The curved bit goes inside the bin and is threaded through holes in the side, and padlock is fastened tightly around the hose.

My garden plan today

Success!! The water well is done! (I think) [updated]

Since the whole lot of us share one garden hose, evening watering sessions can lead to lots of waiting for one's turn. It's nice time to chat with the neighbors, but no fun if you're in a hurry, or worse, you didn't water the day before and you're in a hurry.
To handle this, many keep really big containers of water in their garden plot so they can water when it's convenient and fill the bin when no one is around. The container of choice is a large garbage can. Like everything in our garden though, you must have a place to keep it. Not only in the garden, but over the winter.
Since my garden is short and wide this year instead of long and narrow, I thought I'd give it a try. I buried a collapsible recycling bin I bought at IKEA, lined it with black garbage bags, and filled it with water. It's about 8" above ground - not so high that it will block sunlight to anything important and settled enough that the softish sides won't fold, I can't knock it over (dumping all of the water) and no one can steal it. I've put 4 foot tall stakes around it so I have something to hold onto when I'm walking by  and won't fall in (I hope).
I hope the black bags will warm up the water and keep it water tight. It's got a lid so the city won't be upset about it being a mosquito breeding spot.
I watered tonight. The seedlings are so small, it's hard to tell what's there. Onion sets I put in are sprouting really well, but I don't think any of the seeds I've put in the ground have done anything. It's hard to tell since so many weeds are coming in. I have to wait until things get more leaves so I can tell them apart.