Record Display for the EPA National Library Catalog


Main Title Elevated Lead in D.C. Drinking Water: A Study of Potential Causative Events, Final Summary Report.
CORP Author Environmental Protection Agency, Washington, DC. Office of Water.
Year Published 2007
Report Number EPA/815/R-07/021
Stock Number PB2008-109721
Additional Subjects Drinking water ; Lead(Metal) ; Water pollution ; District of Columbia ; Water supply ; Sewers ; Waste water ; Water services ; Water pipeleines ; Compliance ; Monitoring ; Sampling ; Occurrences ; Lead and copper rule(LCR)
Library Call Number Additional Info Location Last
NTIS  PB2008-109721 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 221p
The District of Columbia Water and Sewer Authority (DCWASA) owns and operates a system that delivers water produced by the U.S. Army Corps of Engineers Washington Aqueduct (WA) to customers in Washington, D.C. During compliance monitoring for the Lead and Copper Rule (LCR) in July 2000 through June 2001, DCWASA exceeded the 15-ig/L action level (AL) for lead at the 90th percentile in home tap sampling. DCWASA repeatedly exceeded the AL during subsequent monitoring through the period ending in December 2004. A combination of factors not a single source or a single causative event contributed to the problematic release of lead in water at consumers taps in the DCWASA system. The primary source of lead release was attributed to the presence of lead service lines (LSLs) in the DCWASA service area. Since the mid-1990s, three notable occurrences in the DCWASA system likely contributed to elevated lead releases during 2000 through 2004.