I'm using this mod in my current game, and needless to say: I like it! The water turrets are quite effective at keeping the biters away (together with the sniper turrets from Combat by Samuel, they almost feel overpowered). However, they have one weak point: the pipes!
I've lost many turrets at one outpost because some spitters managed to cut the pipe connection to some water turrets, so they ran out of steam (everything was so crammed, I had to place the water turrets closer to the wall than I wanted to). I haven't researched bots yet, and my base is quite spread out, so it's hard to keep checking for destroyed pipes.
How about adding some acid resistant pipes to your mod, similar to how this mod does it for walls? They should be locked behind some research and be quite expensive (perhaps 10 plastic bars, 2 steel plates and 1 normal pipe for 1 acid resistant pipes?) to prevent the water turret from becoming really overpowered. Even though the new pipes would be expensive, it wouldn't really matter: they are meant only for use on the front line, not to replace every single pipe on your base.
Could you add this, please? :-D