What is the maximum percent of lead content allowed in solder for a copper water pipe system?

The correct choice regarding the maximum percent of lead content allowed in solder for a copper water pipe system is 0.2%. This standard is in accordance with regulations aimed at reducing lead exposure, which is known to have serious health implications, particularly for children and pregnant women.

The reduction of lead content in materials used for plumbing fixtures helps ensure that lead does not leach into the drinking water supply. The 0.2% limit reflects a commitment to public health and safety, encouraging the use of safer materials in plumbing systems. By maintaining this lower threshold, regulations aim to protect consumers and the environment from the hazards associated with lead exposure.

This standard is part of broader initiatives, such as the Safe Drinking Water Act and various state regulations, which focus on ensuring clean and safe drinking water by limiting the amount of harmful substances in plumbing materials.