Natural Organic matter (NOM) is a highly complex heterogeneous polyelectrolytic mixture, which has challenged analytical characterization over the years. One of the most powerful interrogation tools has been NMR. In this talk the advantages of multidimensional liquid and solid state NMR techniques in the study of NOM will be presented by comparing the data they provide for both soil and aquatic NOMs. In addition, possible limitations, especially in terms of relaxation rates will be discussed. Also, the solvent capabilities of NOM in regards to biomembranes as studied by 31P NMR will be discussed. Finally, time permitting, the application of high resolution magic angle spinning 1H NMR to the hydration of soils will be presented.