Wikivoyage has a travel guide for Balapitiya.
Balapitiya is a coastal town, in south west Sri Lanka. It is located in the Southern Province in Sri Lanka. Situated 80 km (50 mi) south of Colombo, about a two-hour drive from the capital. It is the nearest town to the Maduganga River. Old Ceylon Moors Family https://www.worldgenweb.org/lkawgw/gen422.html
06°16′N 80°02′E / 6.267°N 80.033°E