A catastrophic flood devastated the whole settlement of San Bartolome in 1863 and its residents were left with no other choice but to abandon the place.

The first group, headed by Don Pablo Luciano, the Governadorcillo, organized a new settlement on the slopes of Mt.

After several years, they named the place Concepcion after the Immaculate Conception, who was believed to possess power over the snakes that abound in the area.

Parua River is heavily silted with 7 meters of sand deposits; its bridge was destroyed by lahar and is visible at Barangay San Nicolas Balas.

Poverty incidence of Concepcion Source: Philippine Statistics Authority[13][14][15][16][17][18][19][20] There are five public high schools and a private tertiary college in the municipality: