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Post your questions on this credit in the forum, and click on the credit language tab to review to the LEED requirements.
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Requirements
Specify substitutes for materials manufactured with lead and cadmium, as follow:
- Specify and use 100% lead-free solder and flux used to connect plumbing pipe on-site for water intended for human consumption that meets the California AB1953 standard that solder must not contain more than 0.2% lead, and flux not more than a weighted average of 0.25% for wetted surfaces.
- Specify and use pipes, pipe fittings, plumbing fittings and faucets for water intended for human consumption that meets the California AB1953 standard of a weighted average lead content of the wetted surface area of not more than 0.25% lead.
- Specify and use lead-free roofing and flashing.
- Specify and use electrical wire and cable with lead content
- Specify no use of interior or exterior paints containing cadmium or lead. Green Seal certified paints or paints meeting Green Seal criteria exclude metals including cadmium, lead, mercury, antimony, and hexavalent chromium.
- use mechanically crimped copper joint system, or
- specify that all solder joints are compliant with ASTM B828 and specify and use ASTM B813 flux.
- Solders and flux containing 0.2% lead or less.
- Pipes, pipe fittings, and well pumps containing 8% lead or less.
- Lead used for radiation shielding and copper used for MRI shielding are exempt from the requirements of this credit.
What does it cost?
Cost estimates for this credit
On each BD+C v4 credit, LEEDuser offers the wisdom of a team of architects, engineers, cost estimators, and LEED experts with hundreds of LEED projects between then. They analyzed the sustainable design strategies associated with each LEED credit, but also to assign actual costs to those strategies.
Our tab contains overall cost guidance, notes on what “soft costs” to expect, and a strategy-by-strategy breakdown of what to consider and what it might cost, in percentage premiums, actual costs, or both.
This information is also available in a full PDF download in The Cost of LEED v4 report.
Learn more about The Cost of LEED v4 »Frequently asked questions
See all forum discussions about this credit »Documentation toolkit
The motherlode of cheat sheets
LEEDuser’s Documentation Toolkit is loaded with calculators to help assess credit compliance, tracking spreadsheets for materials, sample templates to help guide your narratives and LEED Online submissions, and examples of actual submissions from certified LEED projects for you to check your work against. To get your plaque, start with the right toolkit.

© Copyright U.S. Green Building Council, Inc. All rights reserved.
Requirements
Specify substitutes for materials manufactured with lead and cadmium, as follow:
- Specify and use 100% lead-free solder and flux used to connect plumbing pipe on-site for water intended for human consumption that meets the California AB1953 standard that solder must not contain more than 0.2% lead, and flux not more than a weighted average of 0.25% for wetted surfaces.
- Specify and use pipes, pipe fittings, plumbing fittings and faucets for water intended for human consumption that meets the California AB1953 standard of a weighted average lead content of the wetted surface area of not more than 0.25% lead.
- Specify and use lead-free roofing and flashing.
- Specify and use electrical wire and cable with lead content
- Specify no use of interior or exterior paints containing cadmium or lead. Green Seal certified paints or paints meeting Green Seal criteria exclude metals including cadmium, lead, mercury, antimony, and hexavalent chromium.
- use mechanically crimped copper joint system, or
- specify that all solder joints are compliant with ASTM B828 and specify and use ASTM B813 flux.
- Solders and flux containing 0.2% lead or less.
- Pipes, pipe fittings, and well pumps containing 8% lead or less.
- Lead used for radiation shielding and copper used for MRI shielding are exempt from the requirements of this credit.