The support documents for the second Six-Year Review of existing National Primary Drinking Water Standards contain extensive information including:
-
the protocol for conducting the review,
-
chemical contaminant health effects,
-
availability of improved laboratory analytical methods,
-
occurrence of regulated contaminants in source water and public water systems,
-
availability of improved water treatment processes, and
-
consideration of other regulatory revisions.
- EPA Protocol for the Second Six-Year Review (PDF)(37 pp, 425 K, October 2009, 815-B-09-002)
- Health Effects Assessment Summary Report for the Second Six Year Review (PDF)(174 pp, 960 K, October 2009, 822-R-09-006)
- Analytical Feasibility Support Document for Second Six-Year Review (PDF)(213 pp, 1 MB, October 2009, 818-B-09-003)
- Development of Estimated Quantitation Levels for Second Six-Year Review (PDF)(56 pp, 701 K, October 2009, 815-B-09-003)
- Occurrence Analysis for Potential Source Waters for Second Six-Year Review (PDF)(51 pp, 2 MB, October 2009, 815-B-09-004)
- The Analysis of Regulated Contaminant Occurrence Data from Public Water Systems in Support of the Second Six-Year Review (PDF)(519 pp, 13 MB, Revised September 2010, 815-B-09-006)
- Contaminant Occurrence Support Document for Category 1 Contaminants (PDF)(311 pp, 9 MB, October 2009, 815-B-09-010)
- Contaminant Occurrence Support Document for Category 2 Contaminants (PDF)(374 pp, 13 MB, October 2009, 815-B-09-011)
- Water Treatment Technology Feasibility Support Document for Chemical Contaminants for the Second Six-Year Review (PDF)(34 pp, 381 K, October 2009, 815-B-09-007)
- Considerations of Other Regulatory Revisions in Support of the Second Six-Year Review (PDF)(30 pp, 244 K, October 2009, 815-B-09-008)