Artificial turf and rubber playgrounds: crumb rubber, microplastics and the EU ban

Picture the turf at your local five-a-side pitch. The green blades are plastic. The black crumbs that spray up when the ball lands are, on most older pitches, ground-up car tyres. A full-size pitch holds an estimated 125 tonnes of that infill. Every game kicks some of it into the hedges, onto boots and down the drain.

For years the argument about turf was about cancer, and that argument has generated more heat than evidence. Meanwhile the less dramatic problem, a few hundred kilos of tyre rubber leaving each pitch every year, was quietly big enough for the EU to ban it. Here’s what’s known, what health agencies concluded, and what’s actually changing.

What’s in the crumbs

Most crumb rubber is made from end-of-life tyres, so it carries the same chemistry as tyre dust on the road: styrene-butadiene rubber, carbon black, zinc, polycyclic aromatic hydrocarbons (PAHs) from the oils, and the antioxidant 6PPD that breaks down into the salmon-killing 6PPD-quinone. Our tyre article covers that chemistry, and we won’t repeat it.

The list is long. A Yale-led team pulled together every chemical reported in crumb rubber across 20 studies and found 306 of them. Computer screening flagged 197 as possible carcinogens, and 52 were already classed as known, presumed or suspected carcinogens by US or EU regulators. Most of the 306 weren’t listed in either agency’s carcinogen database at all.

That’s a list of hazards, not a measure of what anyone absorbs. Reviews of measured PAH levels in infill show an enormous spread, from 0.4 to 3,196 mg per kg, with older turf generally lower than new. A 2026 Spanish study of playground flooring, running tracks and infill found the highest PAH levels in tyre-type rubber, but only 1.1% to 6.2% of those PAHs dissolved into simulated sweat and skin oil.

The turf itself isn’t innocent either:

• Lead. In 2007 a field in Newark, New Jersey, was closed after lead turned up in the turf fibres and surface dust. Tests elsewhere found lead in turf and dust at recreational fields and child care centres above the US lead limit for children’s products and EPA’s floor-dust standard.
• PFAS. A Swedish study found fluorine in all 51 turf samples it tested, mostly locked into polymers. Our garden article covers that study and the US states that now ban PFAS in turf.

How much escapes

Infill is loose by design. It gets kicked out, carried off in socks and kit bags, brushed off the edges during maintenance, washed into drains and, in cold countries, shovelled off with the snow.

A 2023 systematic review tried to add it all up. Without any measures to contain it, about 950 kg a year leaves an average football pitch, somewhere between 570 kg and 2,280 kg. Clearing snow can add another 830 kg. A 2025 model for Norway, where winter maintenance is a big deal, came to a similar 900 kg per field a year, or 1,187 tonnes nationally, and found the total rising each year.

When EU regulators worked through every product with plastic deliberately added to it (glitter, cosmetics, fertiliser coatings and so on), they estimated that more than 42,000 tonnes of intentionally added microplastics reach the environment every year. Pitch infill was the largest single source, according to the scientific committee that assessed it.

Where it goes matters too. A 2026 US study sampled stormwater draining off artificial turf fields. Crumb rubber released more 6PPD-quinone, zinc and copper than alternative infills, and its 6PPD-quinone leaching didn’t fall as the infill aged. Runoff from one field hit 130 nanograms of 6PPD-quinone per litre. Against the revised lethal level for juvenile coho salmon used in our tyre article (95 ng/L), that’s above the line; the authors, using a different benchmark, put it at more than three times. Copper peaked at 726 micrograms per litre.

What the EU did: two rules, not one

2022: a cap on cancer-causing chemicals

The first EU rule targeted chemistry, not plastic. Dutch public health researchers at RIVM and the European Chemicals Agency both concluded in 2017 that the existing limits on PAHs in rubber granules, which worked out at roughly 387 mg/kg for the eight main PAHs, were too high to protect people.

Since 10 August 2022, granules and mulches sold for turf pitches, playgrounds or sports use in the EU must contain no more than 20 mg/kg of those eight PAHs combined, and new infill can’t be used if it’s over the limit. Infill already in place before that date could stay.

Two details are worth knowing. First, the cap is barely a stretch: Dutch sampling of tyre infill found levels of 6.7 to 21 mg/kg, so most product already passed. Second, the EU’s own risk committee said plainly that 20 mg/kg “is not based upon the estimated risk”. It’s there to stop very high concentrations. Because these PAHs cause cancer without a known safe threshold, the regulation says exposure “should be as low as possible”. The same committee noted that for most people, food and air are bigger PAH sources than turf.

2023: the microplastics restriction and the 2031 infill ban

The bigger move came in Regulation (EU) 2023/2055, the restriction on intentionally added microplastics. Our policy tracker has the full timeline; here’s the turf part, as of 20 October 2026.

• What’s banned: placing granular infill for synthetic sports surfaces on the market, from 17 October 2031. The rule entered into force on 17 October 2023, so the industry got eight years.
• What counts: synthetic polymer particles of 5 mm or less. That covers tyre crumb, and also the synthetic replacements often marketed as cleaner: thermoplastic elastomer (TPE) and EPDM rubber granules are synthetic polymers too. Natural polymers that haven’t been chemically modified are excluded, so natural infills such as cork fall outside the ban, as do systems that use no infill at all.
• What isn’t touched: pitches already built. The ban is on selling infill, not on playing on existing turf. The Commission chose eight years rather than the six that had been proposed so that more existing pitches could reach the end of their natural life before replacement. The Commission’s guidance says the ban covers selling infill, not using it: after October 2031 a pitch owner can still top up from stock it already holds, but can’t buy new synthetic infill.

The fight over “just contain it”

There was a real alternative on the table. The original proposal offered two routes: an outright ban after six years, or a ban after three years with an exemption for pitches using containment measures that kept losses below 7 grams per square metre a year.

The EU’s risk committee clearly preferred a ban. It doubted containment would work, especially on existing pitches and for the smallest particles. The socio-economic committee agreed containment would be much cheaper but less effective than a ban in the long term, and said choosing between them was a policy call. The Commission went with the ban and a longer transition.

Containment still matters in the meantime. The 2023 review found snow clearing, brushing and stuff carried off by players were the main pathways, and that fixes for them are well established.

Everywhere else

As of 20 October 2026, we found no federal restriction on crumb rubber infill in the US. The action there has been on PFAS in turf (Colorado, Vermont and Maine; see our garden article) rather than on rubber infill or microplastics. A group of environmental health scientists used a 2024 opinion piece in Environmental Science & Technology to argue that other nations should follow the EU.

What about playgrounds?

The 2022 PAH limit explicitly covers granules and mulches used loose on playgrounds. The 2023 microplastics restriction gives its 2031 date only to infill for synthetic sports surfaces, and the European Commission’s explanatory guide says that grace period doesn’t extend to playgrounds: selling synthetic rubber granulate for use as a loose layer on playgrounds has been banned since 17 October 2023. Poured-in-place rubber, where granules are bound into a solid surface, is exempt because the granules are permanently locked into a solid matrix, and pre-made rubber tiles count as finished articles outside the rule. Rubber mulch flakes are 4 to 130 mm long and 10 to 15 mm wide, mostly above the 5 mm cut-off. All of these surfaces wear down over time. The guide is the Commission’s interpretation, not the regulation itself.

What health agencies have actually concluded

This is where the internet gets loud. Here’s what the bodies that looked hardest have said.

United States (EPA and CDC, 2019 and 2024). A multi-year federal study found metals, organic chemicals and bacteria in crumb rubber but concluded that exposures were “likely limited”. Only 1% to 3% of metals dissolved into simulated body fluids, players’ blood metals were similar to the general population, and urinary PAH markers were no different from people playing on grass. Air at the one indoor field carried more chemicals. EPA stresses this was not a risk assessment.

California (OEHHA, March 2026). The state’s environmental health agency published its final turf study this year. As quoted in a 2026 review, it found no “significant health risks to players, coaches, referees and spectators from on-field or off-field exposure to chemicals in crumb rubber infill from synthetic turf fields based on the assessment method and available data”. As its title says, it assessed chemicals in crumb rubber infill, not the plastic grass, microplastics or runoff. (We couldn’t open the report itself; its website blocks automated access.)

Europe (RIVM, ECHA). Their 2017 work found the old PAH limits too high, which led to the 2022 cap. ECHA also flagged how little was known about the full chemical make-up of tyre granules, and how many inputs to its own assessment rested on assumptions, according to the 2026 review.

Cancer clusters. The fear that soccer goalkeepers were getting lymphoma from turf drove much of the early alarm. Washington State’s health department investigated in 2017 and found that cancer among the soccer players it looked at was not higher than expected from population rates. A 2025 review found the only two epidemiological studies saw no significant link with leukaemia or lymphoma.

Now the caveats, because they’re big.

• The epidemiology is thin. Those two studies were an ecological study and a cross-sectional one, designs that can’t follow people over time. A 2022 review called the human studies “highly limited in design”. Nobody has followed players for decades.
• Assumptions drive the answers. Agencies disagree wildly about how much crumb a child swallows in a session, from ECHA’s 0.05 g to OEHHA’s high-end 10.4 g, about a tablespoon. Children with pica, who compulsively eat non-food items, are the group where a 2024 systematic review found estimated cancer risks from swallowing PAHs, and it concluded definitive answers on real-world risk weren’t possible.
• Not everyone is reassured. Mount Sinai’s Children’s Environmental Health Center recommends natural grass as the safest option for children.

So: no good evidence that playing on crumb rubber has harmed anyone, from a body of evidence that isn’t strong enough to say it hasn’t. A 2026 review summed it up as “highly fragmentary”, with most studies finding low or negligible risk. That’s where we’d put it too.

The environmental case is stronger and simpler. Hundreds of kilos of tyre rubber leave each pitch a year, it doesn’t break down, and its runoff carries a chemical that kills fish. You don’t need to settle the cancer question to see that’s a bad design.

What you can actually do

Ranked by how strong the evidence is.

1. If you’re choosing a surface for a club, school or council: skip synthetic polymer infill (strong evidence on the environmental side). Infill loss and runoff are well documented, and in the EU, synthetic infill can’t be sold after October 2031, so a pitch built with it now may outlive its supply of top-ups. Ask about real grass, infill-free systems or natural infills like cork, and about PFAS-free turf. The plastic grass still sheds and ends up in landfill, so turf of any kind is a compromise.
2. On existing pitches, push for containment (moderate evidence). The 2023 review found the main loss pathways were snow clearing, brushing and granulate carried off by players, and that fixes for them are well established and relatively easy. Ask your club or council what they do about each.
3. For kids, basic hygiene (precautionary, weak evidence of harm). Wash hands before eating, shake out shoes and kit before they come inside, and discourage small children from mouthing crumbs. These cost nothing; they’re not a response to proven harm.
4. Prefer outdoor pitches to indoor crumb-rubber halls where you can (limited evidence). The US study found more chemicals in the air at the indoor field. It was one field, so treat this as a lean, not a rule.
5. Don’t keep your kid off the pitch. The 2026 review notes that a sedentary lifestyle is considered a global pandemic and a public health priority, and the evidence of direct harm from crumb rubber is weak. The fix is better surfaces, not less football.
6. Push for the policy. Outside the EU, nobody has a date for ending synthetic infill. Councils and school boards buy most of these pitches, so they’re the place to start. Follow the rules on our policy page.

Our product standard is written for things that touch your food, mouth and skin, so it doesn’t yet cover surfaces like these. If we ever recommend one, we’ll add a rule first.