The state government would spend of Rs 602 crore to achieve this target, Principal Secretary of Urban Development Department Chaitnya Prasad said.
The Centre will give Rs 4,000, while the state would provide Rs 8,000 for every toilet built, he said.
"Work is underway for construction of 38,155 toilets. There is a target to build 3 lakh toilets in the financial year 2016-17," Prasad said.
GIS mapping would be conducted simultaneously in all 69 towns of the state which would be a record in the country, Prasad said, adding after getting approval of the state Cabinet for Patna Metro, a detailed project report has been sent to the Centre.