A few links that may be interesting.
https://www.foxnews.com/science/how-green-are-low-flow-toilets
https://www.chicagotribune.com/news/ct-xpm-2010-01-15-1001130945-story.html
https://terrylove.com/bottomline/
https://www.inquirer.com/philly/bus...ilet_that_needs_more_than_a_single_flush.html
https://www.apartmenttherapy.com/bottoms-up-the-pros-picks-for-top-toilets-171377
https://www.foxnews.com/science/how-green-are-low-flow-toilets
https://www.chicagotribune.com/news/ct-xpm-2010-01-15-1001130945-story.html
https://terrylove.com/bottomline/
https://www.inquirer.com/philly/bus...ilet_that_needs_more_than_a_single_flush.html
https://www.apartmenttherapy.com/bottoms-up-the-pros-picks-for-top-toilets-171377