[Experimental basis for the tentative permissible levels of phthalazol, sulfadimethoxine and Bepask in bodies of water].

: Tentative permissible levels (TPL) of phthalazol, sulfadimethoxine, and Bepask in the water were substantiated on the basis of study of organoleptic properties, of influence on sanitary status of water bodies and toxicologic characteristics of these substances. TPL of studied chemicals accordingly are (mg/dm3): 12, 1 and 6.8.