Madval ,sometimes also known as Dhobi is a washerman community of Goa

Goa

Goa , a former Portuguese colony, is India's smallest state by area and the fourth smallest by population. Located in South West India in the region known as the Konkan, it is bounded by the state of Maharashtra to the north, and by Karnataka to the east and south, while the Arabian Sea forms its...

 and rest of the Konkan

Konkan

The Konkan also called the Konkan Coast or Karavali is a rugged section of the western coastline of India from Raigad to Mangalore...

.They claim to be Rajakas.The occupation of washermen is a hereditary occupation and the washermen are known as madval. The services of washermen are essential for the people of the urban as well as rural areas alike. They have their own localities which are sometimes gifted to them by the temples for the services they render.