All toilets ≤ 1.28 GPF (HET); lavatory faucets ≤ 1.5 GPM; showerheads ≤ 2.0 GPM (WaterSense labeled)

Description

WaterSense-labeled homes must have all indoor water fixtures meeting the WaterSense labeling thresholds: toilets ≤ 1.28 gallons per flush (high-efficiency toilet, HET); lavatory + kitchen faucets ≤ 1.5 gallons per minute at 60 psi (vs. federal max of 2.2 gpm); showerheads ≤ 2.0 gpm at 80 psi (vs. federal max of 2.5 gpm). Urinals (if installed) ≤ 0.5 gpf. Each fixture must carry the WaterSense label.

Why this exists

These thresholds are now common defaults — most major fixture brands ship WaterSense models. Specifying them is essentially free at first cost while saving ~30% of indoor water use. Architects should spec WaterSense on every plumbing schedule.

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Solver enforcement

Browsable only — the solver does not currently enforce this directive (no spec-level data to check against). This entry exists so the architect personas can cite it in conversation and the user can read what the rule says.

Related directives

• Bathroom walls must contain reinforcement to allow later installation of grab bars · HUD FHA Design Manual Requirement 6 (Chapter Six)
• Usable kitchens and bathrooms: 30x48 inch clear floor space at fixtures + 60 inch turn circle · HUD FHA Design Manual Requirement 7 (Chapter Seven)
• Toilet side grab-bar reinforcement: 36 inches from back wall, 33-36 inches above floor · HUD FHA Design Manual Chapter Six §6.4
• Adaptable kitchens: removable cabinet below sink + 27-inch knee clearance · HUD FHA Design Manual Chapter Seven §7.5
• Kitchen wheelchair turning space: 60-inch diameter circle OR T-turn · HUD FHA Design Manual Chapter Seven §7.6