A modern low flush toilet is excellent. They flush considerably better than the old 5 gpf toilets. I’ve seen plumbers advise replacing old 5 gpf toilets with 1

A modern low flush toilet is excellent. They flush considerably better than the old 5 gpf toilets. I’ve seen plumbers advise replacing old 5 gpf toilets with 1.28 gpf toilets to reduce the frequency of clogs. For amusement, you can look up MAPS testing. People flush varying amounts of standardized pretend poop to make sure that toilets work well. (But yes, there was a generation of low flush toilets that were essentially 5 gpf toilets modified to use less water per flush. They worked poorly.) Also, a covered pool uses surprisingly little water.