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Don't Touch the Water

Thursday, 31 July 2025 13:13

By Martin Webber

People need to avoid contact with the water in the River Medway at Tonbridge due to toxic blue-green algae, with pets also at risk.

The Environment Agency has confirmed that there is a significant amount of blue-green algae in the river and warns that people should steer clear of the water to avoid illness.

It says skin contact or swallowing the water can cause nasty symptoms in both humans and dogs.

Signs are up on the riverbank with more information but people are being warned to take care next to the river.

Blue-green algae occurs naturally and isn't always toxic, but during dry spells it can grow rapidly and become harmful.

It can appear as green or blue scum, green-tinged water, an oily slick on the surface or paint-like streaks.

The message is:

- Avoid contact with the water
- Do not paddle or swim
- Do not let dogs drink or enter the water

Even a splash can cause unpleasant symptoms. In humans it can lead to:
- Skin rashes
- Eye, nose or throat irritation
- Stomach pain, vomiting, diarrhoea
- Headaches or dizziness


In pets it can be very serious. If your dog has been in the water look for the following:
- Vomiting
- Lethargy
- Seizures
- Drooling or breathing difficulty
- Staggering or sudden collapse

If symptoms appear, contact a doctor or vet immediately.

The blooms can take a while to clear. 

The BBC published this report on pollution in local rivers in mid-July.

https://www.bbc.co.uk/news/articles/cgrxd4gn41vo

 

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