When does manganese become a concern for water systems based on its concentration?

Manganese becomes a concern for water systems at a concentration of 0.05 mg/l. At this level, manganese can start to cause aesthetic issues, such as staining of laundry and plumbing fixtures, as well as taste and odor problems in drinking water. It is especially important for water treatment operators to monitor manganese levels, as prolonged exposure to higher concentrations may lead to health concerns for individuals consuming the water over time. Maintaining manganese concentrations below this threshold helps ensure compliance with water quality standards and protects public health, making it a critical consideration for water systems.