Many years ago, one of our longtime members posted the suggestion of using a turkey baster to empty the Tormek water troughs. I purchased one at my local grocery store and have happily been using it ever since. Mine is certainly a low cost version. The one in the link strikes me as a good, longterm investment.
https://www.leevalley.com/en-us/shop/kitchen/kitchen-tools/meat-and-poultry/74738-dripless-baster
Ken