Trihalometanii (THMs) din apa potabila sunt compusi secundari ai clorinarii apei, care

rezulta din interactiunea materiei organice prezente in apa si clorul utilizat la dezinfectia acesteia.

Formarea THM depinde de mai multi factori, cum ar fi temperatura, pH-ul, timpul de reactie, etc.

Pentru exemplificare s-au ales studii de caz: sistemele de tratare cu apa din trei orase din

Transilvania, care au surse de apa diferite. S-au investigat pe baza de chestionar 629 de subiecti

din localitatile de studiu in scopul determinarii cantitatii de apa consumata zilnic, media

consumului de apa pe zi, tipul de apa consumat, diferentele de consum ale apei, in functie de sex,

varsta, educatie si localitatea de rezidenta. Concomitent cu acest chestionar s-au efectuat analize

ale probelor de apa prelevate in zonele de studiu. In final se incearca evaluarea expunerii

persoanelor la THM din apa potabila si riscurile asupra starii de sanatate a populatiei din cele trei

orase si experimentarea modelului in teren pentru determinarea THMs din urina unui grup

populational, in diferite conditii de expunere la THMs din apa potabila.

Trihalomethanes (THMs) from drinking-water, are chlorinated water by-products,

resulting from the interaction between organic matter and chlorine used to disinfect the water.

THM s formation depends on many factors, such as temperature, pH, reaction time, etc. We

choose three cities from Transilvania area to show the differences between three water treatment

plants, with different water sources. The research was based on a questionnaire in which we

investigate 629 subjects in three cities from the study area in order to determine the amount of

daily average water consumption, type of water consumed, water consumption differences

depending on gender, age, education and place of residence. Along with this questionnaire,

analyses were conducted in those three areas of study by taking water samples, which were

analyzed in the laboratory. Finally we try to assess human exposure to THMs from drinking

water, and to assess the risks to health for this population and experiment a field model for

determination of THMs in human urine, in different conditions of to THMs exposure in drinking

water.