The quality of water in rivers and lakes is a topic of great global interest due to its impact on people's lives. In the conditions of an increasing need for water, knowing the quality of surface water resources in Suceava County is a current topic. The main purpose of this study is to assess the quality of surface water in Suceava County. For this we analyzed the following physico-chemical indicators: ammonium, nitrites, nitrates, phosphates, dissolved oxygen, chemical oxygen consumption and dry filterable residue at 105ºC determined after analyzing the water samples collected by the Suceava Water Management Service from Siret, Suceava, Moldova and Bistrița rivers, from their tributaries (Băișescu, Bârnărel, Brodina, Dorna, Falcău, Humor, Neagra, Pozen, Solca, Suha, Șomuzul Mare, Voitinel and Voroneț) and from Bucecea and Rogojești lakes, in 2008-2021 period. Following this evaluation, we found that in Suceava County the quality of surface water is mostly good, excepting Suceava River, in the Tișăuți section, where the water quality is moderate, the Pozen River, in the Satu - Mare section and the Șomuzu Mare River, in the Dolhești section with a poor ecological status.