Nanoconfined water plays an important role in many areas of research such as oil recovery or molecular biology. However, the mechanics and dynamics of nanoconfined water are not well understood. Using an ultra-sensitive homebuilt atomic force microscope, we have shown that pure water film (ρ = 18 MΩ-cm) exhibits squeeze rate dependent viscoelastic properties, and a solid-like behavior at a squeeze rate ≥ 0.8 nm/s, as manifested by an increased Maxwell’s relaxation time (Phys. Rev. Lett. 2010). The introduction of NaCl to the film enhances this tendency by showing the solid-like behavior even at a lower squeeze rate of 0.2 nm/s, as well as extending the range of ordering of water molecules along a mica surface (Langmuir 2016). Here, we will discuss these results as well as the changes introduced by another alkali salt (CsCl) to form a collective picture of the role played by alkali salts in shaping the dynamic mechanical response of nanoconfined water film.