We’ve all seen them — the ancient toilets that need to be replaced as part of an upgrade or remodel; the ones that use upwards of 3.5 to seven gallons of water per flush.
Thankfully, the standards have changed and the 1990s saw regulation to reduce the amount of water being used in both residential, multifamily and commercial toilets, mandating that toilets manufactured in the U.S. use no more than 1.6 gallons per flush.