At my house in Riverside, I know the reflex: unscrew a mineral-clogged faucet aerator, see a stronger stream, and leave the little piece off. I used to take that stronger stream as proof that the low-pressure problem was solved. As of mid-September 2026, here in California, I still understand why that feels convincing. You can see the difference right away, without having to know what is happening inside the plumbing.
But the bare spout is not the finished job. In Riverside, Riverside Public Utilities recommends an aerator on a bathroom or kitchen faucet and says it can save about 1 gallon per minute by reducing flow while using air to maintain good pressure. That is a reason to look at the clogged piece, not to make its absence permanent.
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What the EPA says
The U.S. Environmental Protection Agency says, “Faucets and faucet accessories—products that can be attached easily to existing faucets to save water—that obtain the WaterSense label have demonstrated both water efficiency and the ability to provide ample flow.” That matters when the stream without an aerator feels better. A comfortable stream and an unrestricted faucet are not the same thing…