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The accuracy of the most recent recommended cross sections dataset for electron scattering from gaseous H₂O (<i>J. Phys. Chem. Ref. Data</i> <b>2021</b>, <i>50</i>, 023103) is probed in a joint experimental and computational study. Simulations of the magnetically confined electron transport through a gas cell containing H₂O for different beam energies (3, 10 and 70 eV) and pressures (2.5 to 20.0 mTorr) have been performed by using a specifically designed Monte Carlo code. The simulated results have been compared with the corresponding experimental data as well as with simulations performed with Geant4DNA. The comparison made between the experiment and simulation provides insight into possible improvement of the recommended dataset.