West Midlands Canal and River Trust urge people near freshwater to take care due to blue-green algae risk
The bacteria can be harmful to humans and animals and tends to appear as a result of the warm weather
People in the West Midlands heading out near bodies of freshwater are being told to watch out for bacteria which can be harmful to both humans and animals.
According to the Canal and River Trust, when the weather gets warmer, a blue-green algae can appear on canals, rivers and reservoirs.
Although not actually classed as an algae but instead a collection of tiny bacteria, it can end up being harmful to both people and animals.
Last month the British Veterinary Association (BVA) called for pet owners to take precautions when walking dogs near freshwater bodies this summer due to the risk of this growth.
Environmental scientist for the Canal and River Trust Charles Hughes covers the West Midlands region and says it is something they've come across this summer.
He says he's seen some that have disappeared in a number of days but some can stay for longer and it's just something for people to be mindful about if they are out and about near bodies of water.
"When you have this prolonged dry, hot weather and nutrient rich waters, it can cause what is known as blue-green algae blooms," he said.
"Those are a particular concern, because not only is there a health and safety risk, but they can also impact water quality.
"It's important to say though that these are naturally occurring organisms, so they are quite an important part of freshwater ecosystems, but when the levels are too high, that's when it can become a problem."
The charity say the algae can take many forms, but it is most recognisable as a shimmering blue-green layer on the surface of the water and at its peak, it can create a much more obvious scum.
It can also appear as green streaks on the surface and as tiny green specks within the water and sometimes make the water look a different colour.
Further information about it can be found over on their website.