September 2025:

High flows and extremely corrosive water chemistry make it difficult to maintain desired pH and Alkalinity levels.

The limestone beds associated with the south treatment system must be cleaned more frequently than anticipated due to the extremely corrosive nature of the water being treated. In addition to cleaning and adding additional limestone, changes have been made as to how the water is distributed throughout the beds. Ultimately, the majority of the water from this discharge will be diverted to the proposed Tioga River Abandoned Mine Drainage Treatment Plant, reducing the load on the south system which will continue to treat water from this discharge and also serve as back-up to treat overflow in times of high water events.