Okay, so you might not think of pansies as a low-water plant, but given that they are typically planted in the fall or early spring, they manage on very little supplemental watering, at least until summer. So, used in those seasons, they may be well suited to a water-wise garden. They come in too many colors and combinations to mention. They are all relatively low-growing, and bloom when its cool. A wonderful companion to flowering cabbage and kale. Just don't put them out in the sun in the hot summer months and expect them to thrive.
Plant in well drained, amended soil in sun to light shade (remember, we're talking fall and spring here). Water periodically, but let the soil dry just a bit between.