Upgrading to a modern, high-efficiency toilet with better flushing mechanisms can eliminate this issue and provide greater peace of mind. 2. Cracks in the Tank or Bowl Visible cracks in the ...

Many water-efficient, low-flow toilets ace CR's tough lab tests, where we flush everything from plastic balls to soaked sponges to water-filled latex condoms.

The same posting called for new standards for showers, toilets, washing machines and dishwashers. High-efficiency toilet standards were first set in 1992 under President George H.W. Bush.