HONOLULU (KHNL) -- KHNL News 8 continues its Earth and Sea Project with ways to save energy and money just by modifying your bathroom.
Old toilets for example, flush down $90 a year on your water bill. According to Home Depot, there are ways to make sure that money doesn't go down the drain.
A free workshop at Home Depot showed that changing a 3.5 gallon per flush toilet made between 1980 to 1994 to a newer, high efficiency toilet, saves a family of four more than $90 on their water bill per year.
"I couldn't give you a brand name and say this is the very best one on the market. I will say the most energy efficient ones use the least amount of water," said workshop teacher, Franny Littlebear.
Another energy-saving tip: install a low-flow shower head. Don't be fooled by the name. Home Depot says it will not reduce your water pressure.
"If you can fill a five gallon bucket of water in 60 seconds, just by changing it to an energy efficient shower head you will save," said Littlebear.
The savings add up to 500 gallons a week for a family of four. That's $250 a year in water heating costs. They're minor adjustments, that can add up to major savings.
Home Depot says leaky toilets waste a lot of water and money. To check for leaks, Home Depot says add red food coloring in your toilet tank. Leave it there, come back in an hour, and check for red water in or around the base of the toilet.
On Wednesday, our exclusive series of reports: The Earth and Sea Project; Going Green in Hawaii continues with a look at how you should safely and wisely interact with ocean mammals.