Yes, but unless your carrying a very light load you need some sort of shoulder strap or webbing yoke to take the weight off your hips and stomach. As you appear to have done.
This is one area where the ladies have the advantage. Having hips unlike myself. Any sort of weight means that I either have to cinch the belt uncomfortably tight or use a shoulder strap.
A 1 litre bottle of water is heavy.
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I don't do dumb & helpless.