Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Physical removal of microbial contaminants in drinking water Watts Premier Incorporated WP-4V point-of-use drinking water treatment system/ [electronic resource] :
CORP Author NSF International, Ann Arbor, MI.;Environmental Protection Agency, Washington, DC.
Publisher U.S. Environmental Protection Agency, Office of Research and Development, National Risk Management Research Laboratory,
Year Published 2006
Report Number EPA/600/R-06/131; NSF-05/12B/EPADWCTR
Stock Number PB2007-107545
Subjects Water--Purification. ; Viruses. ; Bacteria.
Additional Subjects ETV programs ; Watts Premier Inc ; Drinking water ; Contamination ; Microbial contaminants ; Water treatment system ; Viruses ; Bacteria ; Environmental Protection Agency (EPA) ; Environmental Technology Verification (ETV) report
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB2007-107545 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 10/08/2007
Collation 1 online resource (46 p.) : digital, PDF file
The Watts Premier WP-4V four-stage POU RO system was tested for removal of bacteria and viruses at NSFs Drinking Water Treatment Systems Laboratory. Five systems were challenged with the bacteriophage viruses fr and MS2, and the bacteria Brevundimonas diminuta. The virus challenges were conducted at three different pH settings (6, 7.5, and 9) to assess whether pH influences the performance of the RO membrane. The bacteria challenges were conducted only at pH 7.5. The challenge concentrations ranged from 3.8 to 5.0 logs for the viruses, and 6.4 to 7.2 logs for the bacteria. The log reductions ranged from 1.3 to 6.4 log10 for B. diminuta, with an average of 2.1 log10. The virus log reductions ranged from 1.4 to 3.6 log10 for fr, and 1.2 to 3.7 log10 for MS2. The average virus log10 reductions were 2.5 and 2.7, respectively. The virus challenge data does not indicate that the pH of the challenge water influenced removal by the RO membrane. See Table VS-2 below for the complete log reduction data.
Title from PDF title screen (viewed on Oct. 29, 2010). "EPA/600/R-06/131." "July 2006." Under a cooperative agreement with the U.S. Environmental Protection Agency Includes bibliographical references (p. 23).