At the European level, Council Directive 2006/11/EC serve as the legal basis for assessing the impact of heavy metals on the aquatic ecosystems. Directive 2006/11/EC distributes heavy metals by toxicity, persistence and bioaccumulation in the groups of substances with harmful effects on the aquatic environment (zinc, copper, chromium, nickel, lead, selenium, arsenic, antimony, molybdenum, titanium, barium, beryllium, boron, uranium, vanadium, cobalt, thallium, tellurium and silver). Present work presents data on the content of the summary of some heavy metals in water and in aquatic sediments in some small rivers (river Ichel, section – village Ratuş; river Camenca, section – village Gura Cainarului; river Raut, section - village Paharniceni and upstream of Orhei sity; river Căinar, section – village Gura Căinarului) and same lakes from the Republic of Moldova. For conclusion it can be said that detected concentrations were background. The content of HM in aquatic sediments (small rivers) show low values and their concentration nor exceed MAC.