one meter up? Horizontal distance doesn't matter, vertical is critical in valuing your pump. What kind of pressure are you looking for because it's not common to find pumps designed to give high pressure that are small, and even harder to find one that will run on batteries.
Keep something in mind, pressurized water won't increase hygene much at all, you could blast a toilet with 3000PSI water at 100 gallons a minute and after you're done there's still be bacteria on it, you're more likley to simply blow whatever is on there into the air in an atomized water mist so it can spread easier.