Abstract:
OBJECTIVES:To report trihalomethane (THM) and haloacetic acid (HAA) concentrations in drinking water, assess variations in these concentrations depending on source and over time, and estimate individual intake during pregnancy. METHODS:Water taken from 33 representative points of the water supply network of the 25 municipalities in the study area was analyzed from 2006-2008. Water drinking habits were recorded using a questionnaire. RESULTS:Mean total THM concentrations were 16.9 μg/L (standard deviation, 7.9), while the mean value for the sum of concentrations of five HAA (monochloroacetic, dichloroacetic, tricholoroacetic, monobromoacetic, and dicromoacetic acids) was 10.9 μg/L (standard deviation, 4.9). Concentrations were lower in spring waters, which were only chlorinated, compared with dam waters, which were subject to a complete purification treatment: 8.8 μg/L vs 19.1 μg/L (p<0.01) and 8.2 μg/L vs 11.7 μg/L (p<0.01). Concentrations significantly increased with the number of deposits in the network and with their rechlorination and were higher in the summer and fall. Mean intakes of total THM and of the five HAA were lower in women supplied with spring water. Intakes differed depending on supply reservoir. CONCLUSIONS:Disinfection by-products in water are affected by water source, supply network structure, and annual season. The mean intake of these products varies depending on the source of drinking water. Mean intakes of all products were much lower than values recommended by the World Health Organization.
journal_name
Gac Sanitjournal_title
Gaceta sanitariaauthors
Santa Marina L,Ayerdi M,Lertxundi A,Basterretxea M,Goñi F,Iñaki Alvare J,Arranz L,Blarduni E,María Ibarluzea Jdoi
10.1016/j.gaceta.2010.03.003subject
Has Abstractpub_date
2010-07-01 00:00:00pages
321-8issue
4eissn
0213-9111issn
1578-1283pii
S0213-9111(10)00100-7journal_volume
24pub_type
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