Fixture flow (GPM) & toilet flush (GPF)
Federal standards cut fixture flow in 1994: faucets and shower heads to lower GPM, toilets to 1.6 gpf (WaterSense is 1.28 gpf). The table lists pre- and post-1994 flow and flush figures as labeled planning typicals — actual fixtures vary. Use them in the aerator savings and toilet savings tools.
| Fixture | Pre-1994 | Post-1994 |
|---|---|---|
| Faucet | 2.2 GPM | 1.5 GPM |
| Shower head | 5.0 GPM | 2.0 GPM |
| Toilet | 3.50 GPF | 1.60 GPF (HE 1.28) |
Labeled planning typicals — federal standards cut flow in 1994; WaterSense fixtures go lower still. Actual fixtures vary; use the numbers on your own fixtures.