实验室对12个水龙头进行了研究，这些水龙头代表了不同的设计、结构材料和制造商，以获得有关从普通厨房水龙头中浸出铅和其他金属的更多信息。研究发现，新的铸造黄铜水龙头可能会导致饮用水中的铅含量超过建议的10 ug/L的无作用水平。此外，从水龙头中滤出的60-75%的铅出现在从水龙头收集的前125 mL水中。在200-250毫升的水流出后，95%或更多的铅通常从水龙头中冲洗出来。确定水龙头的最大铅浓度要求对水龙头的冷水侧和热水侧进行取样，且取样量不得超过100-125 mL。包括6个参考文献、表格和图表。

Twelve faucets, representing various designs, materials of construction, and manufacturers, were studied in the laboratory to develop additional information about the leaching of lead and other metals from common kitchen faucets. It was found that new cast-brass faucets could contribute lead to drinking water in excess of the proposed no action level of 10 ug/L. Also, 60-75 percent of the lead leached from a faucet appeared in the first 125 mL of water collected from the faucet. After 200-250 mL of water had flowed, 95 percent or more of the lead had normally been flushed from the faucet. Determining the maximum lead concentration from a faucet requires that both cold and hot water sides of the faucet be sampled and that the samples be no larger than 100-125 mL. Includes 6 references, tables, figures.