I used to be a lifeguard – here's why you should never skip this essential pool maintenance task if you want to keep your family safe

A large in-ground swimming pool, with a raised hot tub behind it. A concrete pagoda beyond, surrounded by trees. .

When I worked as a lifeguard, there was one chore that we had to complete without question every day – testing the pool water.

Beyond keeping the pool clean, this simple test also ensured the water was safe and free from excessive chemicals.