The Binghamton Johnson City Sewage Treatment Plant is receiving an additional $20 million from the state to help pay for its costly rehabilitation.
The Environmental Facilities Corporation has increased the amount of state funding for the project from $5 million to $25 million.
Earlier this year, Project Manager Ken Del Bianco estimated the total cost at around $262 million.
The project includes a new flood wall, storm water pump stations, a new chemical building and administrative offices.
A spokesman for Binghamton Mayor Rich David says the plant’s owners continue to seek grant opportunities from other state and federal sources.
And there is ongoing litigation to recoup some funds from former contractors associated with a wall collapse.
However, if those avenues are unsuccessful, the remaining $212 million cost will be borne by rate payers.