The medieval religious Orders as peace negotiators

"The religious military orders of the Middle Ages are often characterised by the image of soldier-monks, dedicated to combat, prayer and nothing else. This image has been strongly nuanced by contemporary historiography. Today's authors add to the military function of the orders, assistance, hospitality and activities in the economic, social, religious, artistic and other fields. Some examples. 

Templars and water

The Templars carefully chose the site where they would build their "domus". One of the most important points was accessibility to water. What was the situation at Arville Commandery, France?