**DRAFT**

Proposed Recommendations

on the final

Drinking Water Contaminant Candidate List (CCL)

for Consideration by the National Drinking Water

Advisory Council

Background

SDWA, as amended in 1996 -- by February 6, 1998 EPA shall publish a list of contaminants, which at the time of publication, are not subject to any proposed or promulgated national primary drinking water regulations, which are known or anticipated to occur in public water systems, and which may require regulation

The list, the Drinking Water Contaminant Candidate List (CCL), identifies contaminants for which the Drinking Water Program will devoted resources toward to determine the appropriate action regarding the contaminant, whether it be health advisories, other guidance, toxicity research, and monitoring. The Candidate List will also be used to select contaminants for determining whether or not regulations will be developed pursuant to the SDWA.

A draft CCL was published in the Federal Register on the on October 6, 1997, and for a period of 60 days, until December 5, 1997, the public had an opportunity to comment on the notice. Based on data and feedback received during the comment period, changes to the CCL were proposed and considered by the NDWAC Working Group on Occurrence & Contaminant Selection. As a result of the deliberations of the Working Group, the following recommendations for the final CCL have been developed for consideration by the full-Council. The executive summary of the January 7, 1998 Working Group Conference Call is attached (Attachment 1). The final CCL must be signed by February 6, 1998 to meet the SDWA statutory deadline.

The Outcome -- Based on use of the criteria and additional information obtained during the comment period, the draft CCL of 71 contaminants should be modified by:

(1) adding 2 contaminants [Perchlorate, Blue-green algae-other algae-and their toxins (e.g., mycotoxin)]

(2) removing 14 others [Sodium, DTBB, Methyl bromide (bromomethane), Rhodamine WT, Dimethoate, zinc, aldicarbs, nickel, acetone, cumene, Hepatitis A virus, Toxoplasma gondii, Cyclospora cayetanensis, and Legionella], and

(3) combining 2 [cyanazine and atrazine-desethyl] into one [Triazines & dedgradation products (including, but not limited to Cyanazine, and atrazine-desethyl)

These changes yield a final CCL of 58 contaminant/contaminant groups, including 48 chemical and 10 microbiological which must be signed by February 6, 1998 to meet the SDWA statutory deadline.

Recommendations

1. It is recommended that the list (see Attachment 2) be the final Drinking Water Contaminant Candidate List.

3. It is recommended that in the Federal Register notice, the information needs and likely next steps be specially stated for each contaminant using Table 2 & Figure 5 (Attachments 3 and 4).

Attachments:

1. Executive Summary, Conference Call, January 7, 1998, NDWAC Working Group on Occurrence & Contaminant Selection

2. Drinking Water Contaminant Candidate List

3. Table 2. Next Steps for the CCL

4. Figure 5. Next Steps for the CCL