The molecular pair correlation functions of liquid H2O have been obtained in the pressure range 1–2000 bar. A strong structural inhomogeneity of liquid water resulting from fluctuations of the entropy and density has been found. This gives rise to a complicated shape of the distribution of the intermolecular distances in the first coordination sphere. The coordination number is equal to approximately 4·4, but not more than 2·5 of the total number of the nearest molecules can form a tetrahedral short-range order.