The U.S. Environmental Protection Agency’s Office of Research and Development and the Office of Water invites you to attend a free webinar on Manganese. There will be two parts to this webinar. For further information, view the flyer for the webinar HERE.
Presentation 1: Manganese Interference with Disinfectant Residual Methods
This presentation will provide a summary of manganese occurrence in public water systems and describe its potential interference with commonly used methods to measure disinfectant residual. Case studies will be shared to demonstrate this issue. A flow chart to diagnose manganese interference will be introduced to help identify approaches to minimize manganese interference with commonly used methods, including sample pre-treatment, sample filtration, and alternative methods.
Presentation 2: Management of Manganese and Small System Considerations
Treatment of manganese is an ongoing concern for operational, esthetic and, more recently, health reasons. Manganese has been shown to be accumulated and released from the distribution system. These release events can cause discolored water but also release other regulated metals of health concern (e.g. lead, arsenic) into the distributed water. Research indicates that a finished water concentration of <0.02 mg/L is achievable by most utilities by optimizing existing treatment. At this concentration, it can also help minimize the accumulation (and subsequent release) of manganese into the distributed water. This presentation will outline management strategies for manganese including small system considerations.
Who should attend?: State, and territory, and tribal personnel responsible for drinking water regulations compliance and treatment technologies permitting, water system operators, technical assistance providers, local government personnel, and others may benefit from attending.