When the water goes back into the sanitary sewer system, we bring that to a treatment plant that's close to the Las Vegas wash.
当水回到卫生下水道系统时,再把水带到离拉斯维加斯处理厂很近的一个处理厂。
英语百科
Sanitary sewer
A sanitary sewer or "foul sewer" is an underground carriage system specifically for transporting sewage from houses and commercial buildings through pipes to treatment or disposal. Sanitary sewers are part of an overall system called sewerage or sewage system.