This page includes the occurrence analysis support documents for Regulatory Determination 1.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Analysis of National Occurrence of the 1998 Contaminant Candidate List (CCL) Regulatory Determination Priority Contaminants in Public Water Systems (PDF)(140 pp, 7 MB)
- Appendices - Analysis of National Occurrence of the 1998 Contaminant Candidate List (CCL) Regulatory Determination Priority Contaminants in Public Water Systems (PDF)(49 pp, 359 K)