Double check the safety of using water. I’ve followed a lot of natural cleaning products recipes and most experts advise against water unless you add a preservative. I believe you can use safely with out preservatives for about a week. Lots of bacteria can grow in standing water. Even leaving a drinking glass of water out overnight will grow bacteria. I’ve gone really old school with soap. I use bar soap at sink unless I’ve handled raw food or something else iffy. In that case I use dawn. I only do this because most liquid soaps I’m allergic to, even the natural ones. I also don’t like liquid soap at all.