Legal basis of water environment standard and water quality protection system is relatively maturity in Japan.
日本水环境标准的法律依据和水质保护体系较为完备。
Existing methodology for deriving aquatic environment including water quality standard, sediment quality standard for protecting aquatic environment of the USA and European Countries were reviewed.
综述了美国及欧洲一些国家现行推导水生环境质量标准的方法研究。
Now, in J, the excellent and good rate of atmospheric environment quality is 94% and environmental noise reaches the standard of function areas and the water quality of drinking water source is 100%.
目前全市空气环境质量优良率达到94%，环境噪声达到功能区标准，饮用水源水质达标率100%。
应用推荐