Installation ≠ sale
Appliance efficiency laws often govern manufacturing, sales, leases, or commercial installation. A consumer product cap does not by itself establish the maximum legal flow for every home installation.
Single-file offline edition. Open this HTML file in a browser. Map, data, filters, and CSV export work offline; legal-source links need internet. Research snapshot: November 7, 2026.
A FIELD GUIDE TO US SHOWERHEAD RULES
Know your flow.
Explore the limits. Understand what applies.
Go straight to the law.
RESEARCH SNAPSHOT
November 7, 202650 states + Washington, DC
November 7, 202650 states + Washington, DC
01 / EXPLORE THE MAP
A closer look, state by state.
Sourced limits for covered work. Select a state for scope and exceptions.
Map unavailable. The state selector and directory below provide the same data.
1.8 gpm2.0 gpm2.5 gpmNot verified
* Scope or local exceptions apply.AK & HI shown as insets.
THE NATIONAL STARTING POINT
Federal standard
2.5gpm at 80 psiProduct standard, not a universal installation approval
02 / THE LAW DIRECTORY
The rules, with receipts.
Every state and DC, plus any separately verified local rules. Penalties are shown with their scope.
| Jurisdiction | Installation limit | Product standard | Penalties & enforcement | Legal sources |
|---|
No matching jurisdictions. Try another search or filter.
“Not verified” is an evidence gap, not a finding that no law or penalty exists. Federal product rules still apply where relevant.
03 / READ BEFORE YOU RENOVATE
A map is a starting point.
Your address is the answer.
Local rules matter
Building and plumbing codes, city ordinances, permits, and project-specific standards can be stricter. This is a 50-state and DC reference, not an exhaustive inventory of every US municipality.
Check the fixture & project
Replacement, new construction, additions, and existing fixtures can be treated differently. Multiple showerheads, body sprays, and handheld units may have combined-flow rules. Read the cited scope.
Penalties have a target
A fine on manufacturers or sellers is not automatically a fine on a homeowner. The directory distinguishes statutory exposure from an unverified local installation penalty.
Sources reviewed for this snapshot: November 7, 2026. Law can change; follow the official links and confirm with your local building department before installation. This reference is not legal advice.
Map geometry: US Atlas / US Census Bureau. Flow rates use US gallons per minute (gpm); 1 US gpm ≈ 3.785 L/min. Test pressure is shown where verified.