Water Sanitation Health

Chemical hazards in drinking-water - 1,2-dichloropropane

1,2-dichloropropane is considered in the WHO Guidelines for Drinking-water Quality. You can link from here to:

The Guidelines for drinking water quality also consider for individual chemicals:

Rolling revision of the WHO Guidelines for Drinking-water Quality

1,2-dichloropropane is included in the plan of work of the rolling revision of the WHO Guidelines for Drinking-water Quality.


The Guidelines for Drinking-water Quality Final Task Force meeting (Geneva, 2003) recommended that several pesticides be referred to the Joint FAO/WHO Meeting on Pesticide Residues (JMPR) with varying levels of priority. These were pentachlorophenol (medium), alachlor (high), ametryn (high), chlorotoluron (low), cyanazine (low), diazinon (low), dichlobenil (medium), 1,2-dichloropropane (low), 1,3-dichloropropene (low), diuron (medium), MCPA (low), methoxychlor (high), metolachlor (low), molinate (high), pendimethalin (no priority set), simazine (high), dichlorprop (low), mecoprop (medium) and 2,4,5-T (medium).

Expected end-product(s)

Revised background documents on those pesticides that have been recently evaluated by JMPR.

Progress to date

The list of JMPR reports (published and in progress) is on the Internet. The Inventory of IPCS and other WHO pesticide evaluations and summary of toxicological evaluations performed by the Joint Meeting on Pesticide Residues (JMPR): Evaluations through 2002 is also available in hard copy and electronically at www.who.int/pcs/. The Guidelines for Drinking-water Quality Working Group meeting (Geneva, 2005) decided to update only those background documents for pesticides in the above list with recent JMPR evaluations.

Other publications of interest

  • Managing surface waters for health (in preparation)