Lead measured at the consumer's tap is primarily the result of corrosion of lead containing
materials used in drinking water transmission, distribution, and premise piping systems.
Reductions in lead levels measured at the tap have been achieved through a combination of
application of corrosion treatment techniques to reduce the corrosivity of their water to lead
source material and through reductions in lead sources in the system via lead service line
replacement and requirements to use "lead-free" materials (defined as not more than 8% lead for
pipes and pipe fittings). A field data collection study was conducted to determine lead levels
from sequential samples collected at single-family residential sites before and after the existing
kitchen faucet was replaced with a non-leaded faucet (i.e. a faucet made using brass containing
< 0.2% lead by weight). Lead levels measured in the first 125 mL samples collected a the tap
after faucet replacement were higher than lead levels measured in the first 125 mL samples
collected before faucet replacement. At two sites, replacement of the existing faucet with a non-leaded
faucet had no impact on calculated 1 liter standing lead levels evaluated 1, 2, 3, and 4
weeks after replacement. At a third site, the calculated 1 liter standing lead level was higher one
week after faucet replacement. Includes 9 references, tables, figures.
| Edition : | Vol. - No. |
| File Size : | 1
file
, 280 KB |
| Note : | This product is unavailable in Ukraine, Russia, Belarus |
| Number of Pages : | 12 |
| Published : | 03/01/2007 |
