Mushrooms Are Cleaning England's Filthy Rivers—And It's Working

Nature has a way of solving problems we’ve made far too complicated. Case in point: England’s water crisis just got a humble fungal assist.

Researchers discovered that turkey tail mushrooms—yes, the edible kind—can scrub rivers clean of some of our worst pollutants. The application is deceptively simple: bags of woodchips laced with turkey tail spores dropped into the water. The mushroom’s root system, or mycelia, does the heavy lifting, filtering out 80% of E. coli bacteria, 83% of phosphorous, and 35% of nitrogen. Those last two are the culprits behind algae blooms that choke waterways of oxygen and turn rivers into biological dead zones.

The results were so impressive that OFWAT, England’s water industry regulator, awarded Anglican Water nearly $2 million to scale up the program in Devon. Similar success followed in Lincolnshire, where agricultural runoff—phosphorous and nitrogen from farmland—was neutralized using the same approach. Joshua Mercer, at Anglian Water, described the mushrooms as a second line of defense to conventional sewage treatment. The vision? A future where his daughter could swim anywhere she wanted without worrying about what’s in the water.

This isn’t mushrooms’first act as environmental cleanup crew. They’ve already proven their worth absorbing heavy metals and even nuclear radiation. What’s remarkable here is the scale and immediacy: a cheap, natural, scalable solution that’s moving from study to implementation in real time. No complex infrastructure. No expensive chemical treatments. Just fungi doing what they’ve done for millennia—breaking down and filtering organic matter.

The deeper story here is about rethinking how we approach water quality. We’ve spent decades building treatment plants and dumping chemicals into the system, yet pollution persists. Sometimes the answer isn’t more technology or more money—it’s working with the systems that already exist in nature. Turkey tail mushrooms cost almost nothing to produce and deploy. They don’t require electricity. They can’t fail in the way mechanical systems do.

If England’s success spreads globally, we could be looking at a quiet revolution in river restoration. Not through lawsuits or regulation, but through biology. That’s the kind of solution worth celebrating.