Abstract
In this study, load factors for water pollutants from 186 industrial sectors in Shiga were determined with its industrial effluent data and interindustry table in 1995 and 2000. As a result, it was revealed that pollutant loading to Lake Biwa from industrial sectors declined drastically during the period and the load factors halved on the average. According to a questionnaire survey to establishments which pollutant loading decreased during the period, it became also clear that loading reduction could be attributed to the establishments' closedown or contraction, concentration reduction measures, discharge reduction measures, and/or connection to sewerage system, the contribution ratios of which were 27%, 9%, 8%, and 4%, respectively.
