R. Stefanova, G. Kostadinova, N. Georgieva
Abstract. The aim of the study was to investigate and assess the quality of water, obtained from own well source at a poultry farm (with capacity 13 350 hens and turkeys), situated in rural area in South Bulgaria, on the basis of organoleptic (smell, color, visibility, taste), physical (temperature) and chemical (pH, permanganate oxidation, hardness, chlorides, ammonia, nitrates, nitrites) indices. It was found that the quality of water corresponded to the norms concerning the organoleptic (smell – 0 ball, norm up to 2 ball; color – 5°, norm up to 15°; visibility – over 60 cm thickness of water plast, norm at least 30 cm; taste – no flavor, norm no flavor), physical (temperature – 13.5-16.8 oC, norm 6-16 oC) and chemical (pH 6.80÷7.15, norm 6.5-9.5; oxidizability 0.24÷0.72 mg O /l, norm up to 5.0 2 mg O /l; hardness 6.49÷7.55 mg Σqv/l, norm up to 12.0 mg Σqv/l; chlorides 162.0÷197.0 mg/l, norm up to 250.0 mg/l and nitrites 0.0÷0.021 mg/l, norm up to 2 0.5 mg/l) indices. The most significant deviation from quality standards were observed regarding the concentration of ammonia (0.01÷0.6, norm up to 0.5 mg/l) and nitrates (58.0÷110.0 mg/l, norm up to 50.0 mg/l).