The feasibility of using a coulometric titration version of the Fischer method to determine water content in several greases was studied. A modified Fischer reagent was used in which methanol was replaced by ethylcellosolve to eliminate the side reactions generated by methanol, reduce reagent toxicity, and broaden the field of reagent application. A coulometric cell was designed to diminish solution mixing between the anode and cathode sides. The relative standard deviation of the method was 0.005-0.018%.