Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Leaching of metals from household plumbing materials : impact of home water softeners /
Author Sorg, Thomas J. ; Schock, M. R. ; Lytle, D. A.
Other Authors
Author Title of a Work
Schock, Michael R.
Lytle, Darren A.
CORP Author National Risk Management Research Lab., Cincinnati, OH. Water Supply and Water Resources Div.
Publisher National Risk Management Research Laboratory, Office of Research and Development, U.S. Environmental Protection Agency,
Year Published 1998
Report Number EPA/600/R-98/044
Stock Number PB98-147309
Subjects Water--Softening. ; Plumbing--Corrosion.
Additional Subjects Metal pipes ; Water pipes ; Leaching ; Corrosion ; Water softeners ; Drinking water ; Potable water ; Water quality ; Piping systems ; Copper ; Lead(Metal) ; Plumbing ; Ion exchanging ; Ion exchange ; Solders ; Houses
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB98-147309 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 01/01/1988
Collation 196 pages : illustrations ; 28 cm
A pilot plant study was conducted to evaluate the effects of household ion exchange softening on the leaching of metals from home plumbing materials. Phase I was conducted using a finished tap water having a hardness of 10 mg/L (as CaCO3) and a pH of 9.1 and Phase II was conducted using a ground water having a hardness of 300 mg/L (as CaCO3) and pH around 7.3. The pilot plant systems consisted of two pipe loop systems, each system having duplicate loops of lead pipe, copper-solder pipe, copper tubing, and brass faucets. One pipe loop system was used as a control system and was fed the source water and the second system was the test system and fed the same water softened with a houshold ion exchange water softener. Pilot plant operation consisted of an intermittent water flowing period followed by a standing period each day. After a standing period, water samples were collected from each loop and faucet to determine the amount of metal leaching from the loops and faucets. Considering the metal leaching data as a whole, the ion exchanged softened water did not show a pattern of higher metal leaching from the pluming materials, nor did the water softener have a detrimental effect on the significant water quality parameters that influence metallic solubility.
"April 1998." Includes bibliographical references (pages 61-62). "EPA/600/R-98/044." Microfiche.