JP Water Pollution Control Act — Review of Provisional Effluent Standards for Boron, Fluorine, and Nitrate Nitrogen

This is a review of the provisional effluent standards for boron and its compounds, fluorine and its compounds, and nitrate nitrogen and related substances, which are temporarily applied under the Water Pollution Control Act to certain industries, such as electroplating, glass manufacturing, and metal mining, for which compliance with the general effluent standards is considered technically extremely difficult. The Ministry of the Environment reviews these standards every three years, progressively narrowing the list of covered industries or tightening the provisional standard values (moving them toward the general standard) as effluent treatment technology becomes more widespread.