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Study of Municipal Stormwater Separate Sewer System (MS4) Water Pollution Management

Absrtact	In order to understand Taiwan’s current municipal stormwater separate sewer system contamination condition and plan for better effluent discharge prevention and control, Taiwan EPA initiated this “Study of Municipal Stormwater Sewer System (MS4) Water Quality Pollution Management” Project in 2012. In this Project, major tasks include 1. Compilation of the Great Taipei Area stormwater system existing information and advance country MS4 management regulations and control methods; 2. The design and implementation of a stormwater sampling program; and 3. The design of Stormwater outreach brochures; and 4. Conducting a symposium. Sixty stormwater samples were collected and analyzed. Results indicated different stormwater characteristics corresponding to different landuse types. Specifically, results showed - 1. Better water quality was found in the areas with higher density of separate waste water sewer system. 2. In the neighborhood of industrial area, conductivity and heavy metal concentration were found to be higher. Based on the lessons learned from USA and Japan’s Storm water management systems, and Taiwan’s current conditions/characteristics, suggestions of how to develop Taiwan stormwater management system were made. Short term plan includes pilot studies in key priority areas for baseline database development. Long term plan comprises feedback mechanism from pilot studies and an expert panel guiding stormwater pollution controls and related regulation development, and waterbody loading capacity calculations. Stormwater outreach brochures were also developed with contents including stormwater source controls, best management practices and cost-benefit evaluation methods. Last but not least, a symposium was also conducted to share all information collected and compiled. Suggestions on conducting pilot studies in key priority areas, developing training programs for environmental professional and then conducting public outreach were made.
Keyword	Municipal Separate Stormwater Sewer System;Best Management Practice;Waterbody Loading Capacity

Absrtact

In order to understand Taiwan’s current municipal stormwater separate sewer system contamination condition and plan for better effluent discharge prevention and control, Taiwan EPA initiated this “Study of Municipal Stormwater Sewer System (MS4) Water Quality Pollution Management” Project in 2012. In this Project, major tasks include 1. Compilation of the Great Taipei Area stormwater system existing information and advance country MS4 management regulations and control methods; 2. The design and implementation of a stormwater sampling program; and 3. The design of Stormwater outreach brochures; and 4. Conducting a symposium. Sixty stormwater samples were collected and analyzed. Results indicated different stormwater characteristics corresponding to different landuse types. Specifically, results showed - 1. Better water quality was found in the areas with higher density of separate waste water sewer system. 2. In the neighborhood of industrial area, conductivity and heavy metal concentration were found to be higher. Based on the lessons learned from USA and Japan’s Storm water management systems, and Taiwan’s current conditions/characteristics, suggestions of how to develop Taiwan stormwater management system were made. Short term plan includes pilot studies in key priority areas for baseline database development. Long term plan comprises feedback mechanism from pilot studies and an expert panel guiding stormwater pollution controls and related regulation development, and waterbody loading capacity calculations. Stormwater outreach brochures were also developed with contents including stormwater source controls, best management practices and cost-benefit evaluation methods. Last but not least, a symposium was also conducted to share all information collected and compiled. Suggestions on conducting pilot studies in key priority areas, developing training programs for environmental professional and then conducting public outreach were made.

Keyword

Municipal Separate Stormwater Sewer System;Best Management Practice;Waterbody Loading Capacity