Support Documents for EPA’s Second Review of Existing Drinking Water Standards
The support documents for the second Six-Year Review of existing National Primary Drinking Water Standards contain extensive information including:
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the protocol for conducting the review,
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chemical contaminant health effects,
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availability of improved laboratory analytical methods,
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occurrence of regulated contaminants in source water and public water systems,
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availability of improved water treatment processes, and
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consideration of other regulatory revisions.
- EPA Protocol for the Second Six-Year Review (pdf)
- Health Effects Assessment Summary Report for the Second Six Year Review (pdf)
- Analytical Feasibility Support Document for Second Six-Year Review (pdf)
- Development of Estimated Quantitation Levels for Second Six-Year Review (pdf)
- Occurrence Analysis for Potential Source Waters for Second Six-Year Review (pdf)
- The Analysis of Regulated Contaminant Occurrence Data from Public Water Systems in Support of the Second Six-Year Review (pdf)
- Contaminant Occurrence Support Document for Category 1 Contaminants (pdf)
- Contaminant Occurrence Support Document for Category 2 Contaminants (pdf)
- Water Treatment Technology Feasibility Support Document for Chemical Contaminants for the Second Six-Year Review (pdf)
- Considerations of Other Regulatory Revisions in Support of the Second Six-Year Review (pdf)