Water Conservation (Part 9 Home Energy)

Low-flow showerheads, faucet aerators, and low-flow toilets are a great way to save water, along with whatever fuel you are using to heat your water, as well as your sewer bill. Most showerheads will tell you on the head how many GPM (gallons per minute) they allow to flow. Low-flow showerheads typically allow 1.5 GPM. A showerhead with 2.0 GPM of flow or higher, is a good candidate for replacement with a low-flow showerhead. Bear in mind that you will have less pressure and water with a low-flow head, although the new designs do a good job of aerating the water. Low-flow faucet aerators are also 1.5 GPM. It is a good idea to replace the aerators that are 2.0 GPM or higher. The aerators are super cheap, and you will not sacrifice anything to achieve the water savings.


Low-flush toilets typically use 1.6 gallons per flush, although there are lower GPF units, while older toilets can use 3.5 GPF. There are also dual-flush toilets that allow even lower GPF for liquid waste. Switching to a low-flow toilet can save 20,000 gallons of water per year. Composting toilets are a good solution for those off the grid, or who want to remain independent of the public sewer.  

Low flow aerating showerhead

ROI low flow showerhead: AVG. 50%

(Varies, dependent on fuel source, water prices, GPM of former head, and water use)

ROI Faucet Aerators 1.5GPM: AVG. 70%

(Varies, dependent on fuel source, water prices, GPM of former head, and water use)

ROI low flow toilet 1.6 GPL: AVG. 28%

(Varies, dependent on water prices, former GPF amount, and sewer)

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