The article presents the results of three years of research into the influence of livestock breeding complex on the qualitative composition of water in non-centralized water supply sources in the zone of its location. The research of water has been conducted according to the indices of water hardness, acidity, content of fluorine, iron, ammonium, nitrite and nitrates depending on remoteness of livestock breeding complex. It has been found that water hardness exceeded the average norm of the maximum allowed limit by 1,5–2 times. Content of fluorine, iron and pH index of the researched water were within regulated norms. Nitrate concentration in water exceeded maximum allowed limit by 2–3 times, at the same time the closer the wells are located to the sources of pollution, the lower the seasonal and annual changes are
