And when you install those in old European cities, with centuries old sewers designed for a certain flow rate, the result is stagnation and failures.
I know in Germany in the summer some cities have to use tanker trucks with water to flush the sewers in summer to avoid smells.
And when you install those in old European cities, with centuries old sewers designed for a certain flow rate, the result is stagnation and failures. I know in Germany in the summer some cities have to use tanker trucks with water to flush the sewers in summer to avoid smells.