Abstract

This cross-sectional study was conducted on the drinking water resources of the city of Jolfa (East Azerbaijan province, Iran) from samples taken from 30 wells. Calcium hardness, pH, total alkalinity, TDS, temperature and other chemical parameters were measured using standard methods. The Langelier, Rayzner, Puckhorius and aggressive indices were calculated. The results showed that the Langelier, Reynar, Puckorius, Larson-skold and aggressive indices were 1.15 (+/- 0.43), 6.92 (+/- 0.54), 6.42 (+/- 0.9), 0.85 (+/- 0.72) and 12.79 (+/- 0.47), respectively. In terms of water classification, 30 of samples fell into the NaCl category and 26.6 in the NaHCO3 category and 43.4 samples in the CaHCO3, MgHCO3 and MgCl category. The sedimentation indices indicated that the water of the wells could be considered as corrosive.