A system for water injection into an internal combustion engine (12) has first injectors (16) that each inject a liquid directly into a combustion chamber (14) of the internal combustion engine (12) and second injectors (24) that each inject a liquid into an intake manifold (20) upstream of the combustion chamber (14). At least one fuel supply valve (40) arranged between a fuel tank (38) and the first and second injectors (24) and a water supply valve (52) arranged between a water reservoir (48) and the first injectors (16) are provided. The valves (40, 52) are switchable such that the first injectors (16) can be brought into flow communication with both the fuel tank (38) and the water reservoir (48) and the second injectors (24) can be brought into flow communication with the fuel tank (38). Water is injected only in specific load ranges via the first injectors (16) into the combustion chambers (14). Depending on the load range, fuel is injected either via the first injectors (16) directly into the combustion chambers (14) of the internal combustion engine (12) or via second injectors (24) into the intake manifold (20) upstream of the combustion chambers (14).
