Today a sceptic tank inspecter came to my house and checked the tank. He took a sample out of the tank, and did some chemical tests on site. It was good to know that the tank was working successfully.
By the way, I'd never thought about how water-purifier tanks work. On second thoughts, if there weren't any of these devices, this world could really be a disaster.
I'm afraid of how the toilets must be in the developing countries or quake-devastated region in Indonesia. They must be dirty and in an unsanitary condition. I thought of all the poor people in the world while looking inside the tank.
(Vocabulary)
s(c)eptic tank 浄化槽
on site 現場で、現地で、その場で
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