The studies aimed at sanitary evaluation of two small lakes situated in the city of Szczecin, Poland: Rusaka and Syrenie Stawy. The studies were performed in summer months (June to August) in 1995-1996 and 1998-1999. In water samples, total coliforms, faecal coliforms, faecal streptococci and pollution-indicative index bacteria (TVC 20^oC, TVC 37^oC) were estimated. The analyses demonstrated that Rusaka lake exhibited lower levels of pollution than that shown by Syrenie Stawy. Also, the obtained results demonstrated in general higher level of pollution than that noted by other authors in municipal lakes.