HOMESTEADER DEPOT · DAILY INSTALL · NOVEMBER 11, 2026
Your shower can feel about the same from one year to the next while using more water than you think. You can get a useful answer without touching a pipe or opening the water heater.
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What’s happening now?
As cold weather moves in, it takes more energy to heat colder incoming water to the same temperature. The Department of Energy identifies water heating as a significant home energy expense and recommends checking fixture flow. Here’s one way to see what the shower itself is asking of the water heater.
Has this happened before?
Why the federal standard measured flow
Illustrated reconstruction. A plumbing aisle in the years when new showerheads began carrying a national flow limit.
In 1992, Congress passed an energy law that set a national flow standard for new showerheads. The limit for showerheads made after January 1, 1994, was 2.5 gallons per minute at a specified test pressure. That last detail matters. The rule gave manufacturers a common way to measure how much water a fixture delivered.
The law applied to new products. It didn’t change a fixture already screwed onto the wall of a house. And the number on a package couldn’t tell a homeowner exactly how much water would run through their own shower under the conditions in their home. Two fixtures can feel similar when you’re standing under them. The amount they send down the drain can still differ. That gap adds up with use. Over eight minutes, a fixture flowing at two gallons a minute uses four fewer gallons than one flowing at two and a half. That comparison holds the time steady so you can see what the fixture changes.
What happened next?
The standard gave shoppers a useful number to compare when buying a new fixture. Later, EPA’s WaterSense program labeled showerheads that use no more than two gallons per minute and also meet performance criteria.
At home, the connection to the utility bill is simple. Every gallon of hot water you use has to be heated. A lower-flow shower can save hot water for a shower of the same length.
Your own test tells you which fixture is worth looking at. Measure it first and keep the result. Then, if you change the head later, you can repeat the same check and see what changed.
Measure one fixture before you shop for a fix.
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How did people keep food cool before they had a fridge?
The Lost Frontier Handbook goes back to the methods people used before modern appliances. Start with the food storage ideas.
What can I do?
About 10 minutes. Use what you have. Keep the worksheet for your binder.
Time the water from the showerhead itself. Stop at the one-gallon line.
Use the items you already have to make today’s check.
1. Turn the shower on to the flow you normally use and start the timer as water hits the bucket.
2. Stop the timer at the one-gallon mark. If it takes 30 seconds, the flow is about two gallons a minute.
3. Write the time down. If you try a new head, repeat the check at the same handle setting.
HOUSEHOLD RESILIENCE NETWORK · BINDER WORKSHEET
The One-Gallon Shower Check
Bathroom or fixture
__________________
Seconds for one gallon
__________________
Date checked
__________________
Today’s win. One number you can use to decide whether that showerhead deserves your attention.
SPONSORED · 4 Foot Farm
Could your next herb plant start with a grocery-store sprig?
Before you price out garden beds, look at what you already own. A basil sprig and a clean jar are one of five ways to start for less.
Ethan Archer
Homesteader Depot
P.S. Try the check before you replace anything. If the result surprises you, tell me what you found.
P.P.S. Next from The Ready Report: Check the Spare Before the Cold
Sources reviewed: U.S. Department of Energy, Faucets and Showerheads. U.S. Code, 42 USC 6295. EPA WaterSense, Showerheads.