The aim of this work is the study of drinking water quality indicators in selected localities in SE Romania (Galati, Braila, Faurei, Buzau, Focsani). Water samples were taken from sources of drinking water (tap water, well water, spring water, filtered tap water with biological filter), frequently used by the population (15 places). They were subjected to chemical and physico-chemical analysis in order to determine the physical, chemical parameters of quality that can affect the health of residents. In five water sources (Independenta (tap), Independenta (spring), Lunca/Buzau, Liesti fountain at 40 m depth, Galati (biologically filtered tap) the pH is below 6.5, a value that does not fit into STAS acquis in force - SR ISO 10523-2009. Regarding the conductivity there are some values that exceed the limit 2.5 mS / cm SR EN 27888 ISO 7888-1997, such as: 6.99 mS / cm - Lunca / Buzau, 4.82 mS / cm - Independenta (spring), 3.95 mS / cm samples from Faurei – spring. Total hardness expressed in German degrees varies from source to source and it is in strict correlation with TDS and its calcium and magnesium content. In the sample Galati - biological filtered tap water DT value (0G) is very small: 3.36 and TDS is 125 mg/L. Tap water from Galati, Focsani, Faurei, Braila have DT in the 26.8 to 28 0G, common values and accepted by consumers and specialists in water analysis. SR ISO 6059-2008 indicates a minimum allowed value of 5 0G. Oxidability index values in the major cases are below that the maximum allowed, 5 mg O2 / L water according to SR EN ISO 8467-2001. But in some cases the values exceed the limits as: Independenta: 8 mg O2/L; Lunca/Buzau: 10 mg O2/L; Focsani/spring: 9 mg O2 /L; Focsani/tap: 8 mg O2 /L; Galati/tap: 6 mg O2 /L. Water is a fundamental and indispensable constituent of the human body. Small changes produce serious disorders and insufficient water intake is much less tolerated than in other deficiency.

References:
1. Government decision No. 974 of 15 June 2004 for approval of the
surveillance, sanitary inspection and water quality monitoring.
2. Law No. 458/2002 on drinking water quality.
3. Law no. 311 of 28 June 2004 amending and supplementing Law no.
458/2002 on drinking water quality.
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5. Maria Cioroi, General Chemistry and Environmental Chemistry -
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