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Stop Flushing Money Down the Drain
Many toilets—particularly older ones—flush more water than they need to, Mills says, but that doesn't mean you need to invest in a new, low-flow porcelain model just yet. Take the lid off your tank and look for the bobber (it typically looks like a rubber balloon on a stick). It determines how much water is used to fill the toilet after each flush, and it can be adjusted up or down using a screwdriver, he explains. "If you lower the bobber, it will use less water," Mills says. "It's a matter of testing—try flushing a piece of toilet paper. If it doesn't clear, move the bobber up a bit." Tweak until you find the right level.