Meanings of accepted levels in English

The amount of ammonia found was not above accepted levels, he said.

At the accepted levels, the treatment had no effect whatever, but as I increased the voltage, he began to report some relief.

In other parts of Vietnam, research shows that rivers are dying and air pollution is above internationally- accepted levels in the capital, Hanoi.

One defeat in 11 league games would normally be cause for celebration, but Manchester City have warped accepted levels of excellence this term.