Pure water contains only water molecules that interact strongly with each other due to their , which are graphically depicted as δ+ and δ−.

The answer to this question would be: partial charge.
Water chemical formula is H2O which can be divided into H+ and OH- ion. This was the acid/base basis. Acid is when the H+ ion is more than OH- ion. Since water is having both ions, water itself will be neutral because the amount of H+ and OH- should be same.