Jfc that's a lot of work!

code/game/objects/structures/divine.dm

@@ -39,7 +39,7 @@
 		return
 	last_process = world.time
 	to_chat(user, "<span class='notice'>The water feels warm and soothing as you touch it. The fountain immediately dries up shortly afterwards.</span>")
-	user.reagents.add_reagent("godblood",20)
+	user.reagents.add_reagent(/datum/reagent/medicine/omnizine/godblood,20)
 	update_icon()
 	addtimer(CALLBACK(src, .proc/update_icon), time_between_uses)
 

code/game/objects/structures/watercloset.dm

@@ -101,7 +101,7 @@
 		if (!open)
 			return
 		var/obj/item/reagent_containers/RG = I
-		RG.reagents.add_reagent("water", min(RG.volume - RG.reagents.total_volume, RG.amount_per_transfer_from_this))
+		RG.reagents.add_reagent(/datum/reagent/water, min(RG.volume - RG.reagents.total_volume, RG.amount_per_transfer_from_this))
 		to_chat(user, "<span class='notice'>You fill [RG] from [src]. Gross.</span>")
 	else
 		return ..()
@@ -461,7 +461,7 @@
 	desc = "A sink used for washing one's hands and face."
 	anchored = TRUE
 	var/busy = FALSE 	//Something's being washed at the moment
-	var/dispensedreagent = "water" // for whenever plumbing happens
+	var/dispensedreagent = /datum/reagent/water // for whenever plumbing happens
 
 
 /obj/structure/sink/attack_hand(mob/living/user)
@@ -536,7 +536,7 @@
 				return
 
 	if(istype(O, /obj/item/mop))
-		O.reagents.add_reagent("[dispensedreagent]", 5)
+		O.reagents.add_reagent(dispensedreagent, 5)
 		to_chat(user, "<span class='notice'>You wet [O] in [src].</span>")
 		playsound(loc, 'sound/effects/slosh.ogg', 25, 1)
 		return