Over 100 persons were still undergoing treatment in different hospitals in the state capital.
"Till now 25 deaths have been reported from Lucknow and six from Unnao," IG (Law and Order) A Satish Ganesh said.
He said that cases have been lodged in Malihabad, Hasanganj, Aurus and two persons have been detained.
Calling for action, Union Home Minister Rajnath Singh said that state government should thoroughly probe the deaths and initiate strict action against those found guilty.
The hooch tragedy occurred in Kharta and other villages in Malihabad area of Lucknow and Talasarai village in Hasanganj area of Unnao district yesterday.