Microplastic detected in the survey (provided by Pirika, a general incorporated association)
Shiga Prefecture and others investigated the amount of minute microplastics contained in a total of 10 points in and around Lake Biwa, and found that they were detected most often in rivers downstream of residential areas. The prefecture revealed by the 5th. Since there is not a lot of littering waste around here, it is possible that plastic products such as outdoor laundry scissors and flower pots have deteriorated and leaked.
The general incorporated association “Pirika” surveyed nationwide last year. In Shiga Prefecture, the average number of 5 points of Lake Biwa and 1 point of Seta River combined is less than 1 per cubic meter. On the other hand, in the river of Konan City, 2.95 per cubic meter was detected, which is the largest number among 10 points, just below the residential area.