Festival Urine Will Grow 4,500 Trees in Wales

Imagine telling someone at a music festival that their bathroom break could help reforest Wales for the next 300 years.

That's exactly what's happening thanks to NPK Recovery, a Bristol startup that collected urine from 700 festivalgoers at Boomtown Festival in Hampshire last July. They transformed it into 540 liters of odor-free fertilizer that will now grow up to 4,500 native trees on the edge of Bannau Brycheiniog National Park, also known as the Brecon Beacons.

The company uses bacteria to extract nitrogen and other natural nutrients from urine, creating a liquid fertilizer that works just as well as commercial alternatives. Their mobile laboratory processes everything on-site at festivals and marathons, turning waste into a resource before anyone heads home.

Co-founder Lucy Bell-Reeves says this three-year project, backed by a £435,627 grant from the Forestry Commission, marks the first time urine-based fertilizer will be tested on trees. A single Scots pine seed was planted Thursday morning to launch the initiative.

"We need to stop flushing crop and tree-growing nutrients down the loo and start using them to increase our fertilizer security," Bell-Reeves said. "After all, we're not about to run out of urine any time soon."

The project partners with Stump up for Trees, a charity founded by author and cyclist Rob Penn that has already planted more than 500,000 trees in the area. They're halfway to their goal of one million trees for landscape restoration.

NPK Recovery isn't just working with festivals. Last April, they collected 1,000 liters from women's urinals at the London Marathon and turned that into fertilizer too.

The Ripple Effect

This circular solution addresses multiple challenges at once. Britain's native tree species are struggling, and the country needs more fertilizer security that doesn't rely on energy-intensive production methods. Meanwhile, festivals and large events create mountains of waste that typically goes nowhere useful.

By capturing nutrients that would otherwise be wasted, NPK Recovery is proving that solutions to environmental problems can be surprisingly simple. Every person produces about 500 liters of urine per year, containing enough nitrogen to grow 320 tomatoes or, apparently, several trees.

The festival fans who used those bathrooms in Hampshire didn't just enjoy music and make memories. They unknowingly became part of a Welsh forest that could flourish for hundreds of years, providing habitat for wildlife, capturing carbon, and restoring a landscape that needs it.

Sometimes the most powerful solutions are the ones we flush away without thinking twice.