Chemistry International
Vol. 21, No.2, March 1999

1999, Vol. 21
No. 2 (March)
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Chemistry International
Vol. 21, No. 2

March 1999

New Books and Publications

New Publications from the World Health Organization

Guidelines for Drinking-Water Quality, Second Edition, Addendum to Volume 1: Recommendations

1998, viii + 36 pages (available in English; French and Spanish in preparation) ISBN 92 4 154514 3, CHF 14.-/USD 12.60;In developing countries: CHF 9.80. Order no. 1154404.

This addendum to Volume 1 of Guidelines for Drinking-Water Quality summarizes new findings that have become available since the second edition was published in 1993, and that call for a reconsideration of selected guideline values issued at that time. In addition, guideline values for four substances are presented here for the first time. The addendum is part of WHO's ongoing effort to ensure that recommendations about the safety of chemical substances found in drinking water are in line with the latest scientific data.

For some of the substances under review, previously established guideline values have been revised in the light of new evidence. For others, new findings confirm the continuing validity of previous recommendations. In addition, guideline values for four substances are presented here for the first time.

Updated or new evaluations are provided for seven inorganic substances (aluminium, boron, copper, nickel, nitrate, nitrite, and uranium), four organic substances (edetic acid, microcystin-LR, benzo[a]pyrene, and fluoranthene), ten pesticides (bentazone, carbofuran, cyanazine, 1,2-dibromoethane, 2,4-dichlorophenoxyacetic acid, 1,2 dichloropropane, diquat, glyphosate, pentachlorophenol, and terbuthylazine), and a disinfectant by-product (chloroform).

Evaluations of chemical substances published in this addendum supersede evaluations of the same substances previously published in Volume 1 of the Guidelines.

The guideline values recommended by WHO are not mandatory limits. Such limits should be set by national or regional authorities, using a risk-benefit approach and taking into consideration local environmental, social, economic, and cultural conditions.

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