Put out fire.

Hi,

I am trying to make a Fire Fighting mod that makes it easier for the user to put out fires by shooting a water projectile from a fire hose and when it hit the ground it will put out fire nearby. I have tried Extinguish and that worked for entities but not blocks, I tried placing and removing water but in some circumstances that ended up removing blocks. My last Idea was to Spawn a Splash Water Bottle which would break on impact and put fire out however I cant summon a splash water bottle, It always summons an Uncraftable Splash Potion.

If you could help me find a way to get any of these to work or any other solutions that was be amazing. 

Thanks