Has anyone ever proved that low-flush toilets actually save water? It seems like the multiple flushes needed to clear my bowl mean they increase water use, at least at my house, not decrease it.

MISSISSAUGA, ONTARIO — Researchers are conducting yet another round of toilet testing, and the bean curd will inevitably hit the fan as some toilet manufacturers are displeased with the results.

Toilets come in many types and designs, offering various sizes, shapes, flush styles, and construction options. Some toilets are engineered to use less water per flush, promoting conservation and ...