The barrio was given the name Munting Tubig supposedly because a small creek served as its boundary. Its original settlers were the Hernandez, Toreja, Sison, Patulot, Acebo and Cabaol families. Early during the American era, soldiers of the US Army rode into the barrio on horses, terrifying some of its inhabitants. Those brave enough to talk to the soldiers soon found out that these were kind people who handed out candies to everyone, especially the children. Like other barrios of Ibaan, Munting Tubig was also an evacuation center for refugees from other towns of Batangas.
Munting‑Tubig is situated at approximately 13.8512, 121.1629, in the island of Luzon. Elevation at these coordinates is estimated at 163.4 meters or 536.1 feet above mean sea level.