In 1994, the city took more than 14,000 water samples, or nearly three times the required number.

But a man from the Ministry had to take water samples.

Dan had left to get some sleep, but she was still there working on the water samples.

The old man was engrossed in taking a water sample when he heard his name called.

They also took more than 1,500 water samples for chemical and biological analysis back on land.

He took a quick water sample and hurried back to the ship.

"And part of my job is to send water samples from the ship to your lab?"

Each day, city collectors take water samples for laboratory analysis.

Nor is he able to find dangerous concentrations in water samples.

Every week we carry out around 15,000 rigorous tests on water samples.