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SESK: Stuff Everyone Should Know · sesk.info/home-c-psi-45-60

EPA WaterSense says a home's incoming water pressure works best in what range?

45 to 60 psi, kept there by a pressure-regulating valve.

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  1. 45 to 60 psi ✔
  2. 15 to 25 psi
  3. 90 to 120 psi

Why: Fixtures work best at 45 to 60 pounds per square inch. Many homes have a pressure-regulating valve to hold it there, and you can check with a gauge on an outdoor hose bibb with all water use off.

Huh, didn't know that: Pressure much higher than the range should be adjusted by a professional, who can set or install a valve to hold about 60 psi.

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References

Answer: 45 to 60 psi. Fixtures work best at 45 to 60 pounds per square inch. Many homes have a pressure-regulating valve to hold it there, and you can check with a gauge on an outdoor hose bibb with all water use off.

  1. EPA WaterSense: Home Maintenance www.epa.gov/watersense/home-maintenance
    incoming water pressure is between 45 and 60 pounds per square inch (psi)
    Checked 2026-10-10.

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