Our Speed Queen has a High Efficiency mode. We don't use it. No water restrictions here, and anything we use goes right back into the aquifer, so very little waste.
If we put it on heavy, large load, with extra rinse, it'll use 66 gallons of water in one cycle.
66 gallons. Wow! That's five loads for our machine, though given my recollection of the size of a Speed Queen load, that is definitely not the same size load. So not quite apples to apples. What I like best about ours is how dry the final spin gets the clothes, much drier than the Speed Queens that I have used in the past. That really saves energy and dollars on the dry cycle. ($0.32-$0.60/kWh)
Like your water, our water is in theory recycled in to an aquifer; what is not clear to me, given the rather complex geology around here, is whether it is the same aquifer that our well is on. I do know that our three nearest neighbors have different water quality from us, and from each other. Around here, it is not like the big, broad aquifers of the Midwest, but since we might be recycling our water, I do try not to put persistent chemical contaminants in to the aquifer. (No chlorinated, or fluorinated organic chemicals on the property, other than Teflon pans and pipe tape, recycle all machine fluids and items at the local hazardous waste center, etc.)
Side story on aquifers: When we were looking at properties, way back when, and we looked at lots of them, we looked at one ranch property that had a well in an aquifer that was perhaps an acre in size and perhaps 40' thick. We passed. The property has an unbelievable view of the whole San Francisco area, while nestled in a wooded mesa of a sort, surrounded by open space. I noticed that the current owner had to put in a pond (on a hillside!) for fire protection. My suspicion is that they have to truck water in. The property is in an area that is known for the mercury deposits and the smelters that ran 24x7 during the gold rush, and into the 1920s. I knew a mining engineer who wanted to mine the stream at the bottom of the valley as he believed it had on the order of a billion ounces of spilled mercury in it. So, yes, there were more than a few issues, real, and potential, with the property.
All the best,
Peter