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The purpose of the present research was to assess the ground water quality from nine private wells from Tarna Mare commune located in Satu Mare County. Tarna Mare the northernmost commune of Satu Mare County, it has a population of 3.774 inhabitants and a total surface of 44 km2. The commune is located along the Tarna Valley at the foothills of Oas Mountains. Tarna Mare background is rich in complex ores of non-ferrous metals (copper, lead, zinc, gold and silver). In order to evaluate the water quality, several physico-chemical parameters (pH, redox potential, total dissolved solids, electrical conductivity and salinity) were investigated. The samples were collected in October, November, December 2015 and January 2016. The results showed that the waters were acidic having the pH between 4.7 and 7.52, considerably lower than the limit imposed by national legislation (between 6.5 and 9.5). The investigated wells proved to have a relatively high contented of dissolved salts, having the electrical conductivity between 83.6 μS/cm and 908 μS/cm and the salinity between 0 and 0.4 ‰. Regarding the cations concentrations (mg / L) those ranged between: 21.55 - 318.19 for Na+, 16.42 - 556.43 for Ca2+, 5.27 - 149.48 for Mg2+ and 5.7 - 481.83 for K+. Li+ and NH4 + were not detected in analyzed samples. [ABSTRACT FROM AUTHOR]

The main purposes of the present study were: to investigate the physico-chemical parameters of several mineral springs from Buzău County and to classify the investigated waters in mineral water classes, according to national legislation. The analyzed parameters were: pH, temperature, electrical conductivity (EC), total dissolved solids (TDS), salinity, dissolved oxygen (DO) and turbidity. The water samples were collected during October 2014. Generally, the water samples proved to be slightly acidic to neutral, with high levels of TDS (37 7 - 1,271 mg/l). Some of the analyzed dissolved ions (carbonates, bromine and phosphate) were not detected in the analyzed waters. The major dissolved ions distribution is dominated by the presence of sodium (3.8 - 589.2 mg/l), calcium (36.5 - 126.3 mg/l), sulphates (60.3 - 412.2 mg/l) and bicarbonates (213.2 - 915 mg/l). Magnesium ranged between 9.9 - 40.6 mg/l, potassium between 8.7 - 45.2 mg/l, fluoride between 1.0 and 2.9 mg/l., nitrates between 6.4 and 108.9 mg/l and chlorine was between 9.1 and 211.8 mg/l. Some of the investigated water can be commercialized as sodic water, chlorine water, sulphate water and bicarbonate water. [ABSTRACT FROM AUTHOR]

Water Quality Index for assessment of drinking water sources from Medias Town, Sibiu County. The purpose of this study was to evaluate the drinking water sources quality from Medias Town, Sibiu County. In November 2013, 6 water samples were taken from different drinking water sources and each water sample was analysed to determinate physico-chemical parameters (using a portable multiparameter WTW 320i major ions (using DIONEX ICS1500 ion chromatograph and heavy metals (using Atomic Absorption Spectrophotometer model ZENIT 700 Analytik Jena). The investigated physico-chemical parameters were: temperature, salinity, electrical conductivity (EC), pH, total dissolved solids (TDS) and redox potential (ORP). The analysed major ions were: lithium (Li+), sodium (Na+), potassium (K+), magnesium (Mg2+), calcium (Ca2+), fluoride(F), chloride (Cl-), bromide (Br-), nitrite (NO2-), nitrate (NO3-), phosphate (PO43-) and sulphate (SO42-). The investigated heavy metals were: lead (Pb), zinc (Zn), cooper (Cu), iron (Fe), cadmium (Cd), nickel (Ni), chromium (Cr) and arsenic (As). The Water Quality Index (WQI) was calculated using the analysed water quality parameters and it ranged from 76 (very poor water quality) to 375 (unsuitable for drinking). [ABSTRACT FROM AUTHOR]

The rural population from Romania is dealing even today with the absence of access to a sure drinking water source. Therefore in 2002 only 65% of the Romanian population had access to drinking water, distributed in 90% from the urban environment and 33% from the rural one (www.recensamant2002.ro). This work presents a case study referring to a 3 month (April-May-June 2011) monitoring of weekly samples of the quality of well water (10 samples) from Tureni village, Cluj County. A portable multiparameter model WTW 720 Germany was used to measure the pH, total dissolved solids (TDS), electrical conductivity (EC), temperature, oxidation-reduction potential and salinity of the collected water samples (these tests were done on site). In laboratory, using the photometric method (RQ Flex instrument, Merck) we determined : Ca2+, Mg2+, SO42-, Cl- and NO3- (C. Nertan et C. Rosu, 2008). The analyzed well water samples have values over the legally admitted limits by the Romanian legislation for the drinking waters (L 458/2002) in the calcium cation, the nitrate and sulfate anion, but also in the global parameters: salinity and TDS . [ABSTRACT FROM AUTHOR]