This research will help the water industry better understand chlorite treatment as a nitrification control technique in chloraminated drinking water systems. The research team will assess the relative risk of feeding chlorite as co-disinfectant vs. other major treatment techniques by applying the EPA’s Comparative Risk Assessment (CRA) Framework. The specific research objectives or goals include:
- Understand major chemical and microbial risks in chloramine systems and identify appropriate indicators for use in the risk assessment associated with major nitrification control alternatives
- Develop a feasible cumulative and comparative risks assessment methodology for evaluating secondary disinfection treatment
- Determine the health risk and cost-effectiveness of combined chloramine/chlorite disinfection vs. major treatment alternatives.
This is the first time the CRA framework will be applied to evaluate the cost benefits of nitrification control strategies. Tailored Collaboration Partner: Louisville Water Company.