| Summary: | Formation of THM species was studied using parallel plate cells and water systems typical for drinking water composition. Current density was varied between 50 A m-2 and 200 A m-2 at room temperature on mixed oxide electrode material as used under practical conditions. Partially, at higher specific charge flowpassed, THM concentration exceeded the limiting value of 50 µg dm-3. However, taking into account dilution effects, necessary in practice for adjusting chlorine concentration, no danger for health seems toexist. AOX concentration was higher than THM concentration by factor 4. A serious problem may result from bromide ion presence even at mg dm-3 level, enlarging bromine-based THM concentration (especially for bromoform) up to critical values. Also, bromate formation is possible.
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