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dc.contributor.authorHamilton, Martin A.
dc.identifier.citationHamilton, M.A., "A statistician's view of the U.S. primary drinking water regulation on coliform contamination," Environmental Science & Technology, 28(11):1808-1811 (1994).en_US
dc.description.abstractThe new U.S. regulation for monitoring possible coliform contamination of drinking water is based on a presenceabsence assay, in contrast to the previous regulation that was based on coliform density assays. A water is said to be in compliance if the fraction of 100-mL sample volumes that contain coliforms is judged to be less than 0.05. The rule is designed to allow only a small chance that the water will pass the test when, in fact, the fraction is greater than the so-called “protection reliability standard” of 0.10. Statistical analysis of the compliance criterion shows that the false pass rate is higher than intended and/or the protection reliability standard is higher than intended, and the false fail rate can be as high as 0.5. For purposes of comparison with the previous regulation, the new criteria are converted into corresponding coliform density values.en_US
dc.titleA statistician's view of the U.S. primary drinking water regulation on coliform contaminationen_US
mus.citation.journaltitleEnvironmental Science & Technologyen_US
mus.identifier.categoryEngineering & Computer Scienceen_US
mus.relation.collegeCollege of Engineeringen_US
mus.relation.departmentCenter for Biofilm Engineering.en_US
mus.relation.departmentChemical & Biological Engineering.en_US
mus.relation.departmentChemical Engineering.en_US
mus.relation.universityMontana State University - Bozemanen_US
mus.relation.researchgroupCenter for Biofilm Engineering.en_US

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