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WaterSense Label

Regulatory

The plumbing product or irrigation control is independently certified to the EPA WaterSense specification for its category, meaning it uses at least 20% less water than the standard for comparable products while meeting the specification's performance criteria.

You might see it written as: EPA WaterSense · WaterSense Labeled · WaterSense Certified · US EPA WaterSense Label

Issued by: US Environmental Protection Agency (via EPA-licensed certifying bodies such as IAPMO R&T and ICC-ES)

This entry is in review — facts are authored but not yet verified against current issuer documentation.

What it proves

The plumbing product or irrigation control is independently certified to the EPA WaterSense specification for its category, meaning it uses at least 20% less water than the standard for comparable products while meeting the specification's performance criteria.

What it does not prove

  • Site or corporate water stewardship claims — WaterSense covers the product's water use, not the manufacturer's operations.
  • Anything about the product's materials, chemical content, or embodied carbon.
  • Energy-efficiency claims, except indirectly where hot-water savings apply.

Claims it can support

Evidence checklist

Minimum authority
Third-party verified
Should state
Product Model · Certifying Body · Certification Date
Date sensitivity
Expiry is not the primary issue; check scope and method instead.

The label is voluntary and US-based; verify the specific model is currently listed in the EPA WaterSense product registry, since listings can be withdrawn.

LEED's indoor water prerequisite requires WaterSense labels for fixture types that have a specification — relevant for US projects.

Source: US EPA — WaterSense ↗