Is artificial turf toxic? What’s known about lead, PFAS, crumb rubber and off-gassing

01Is there lead in artificial turf?

Some older turf has it. In 2008, drawing on New Jersey’s testing, CDC warned that nylon and nylon/polyethylene blend fibers held lead at levels of potential public health concern, while polyethylene-only fields showed very low levels (CDC). New York’s health department later put the lead in some fibers at roughly 2,000 to 9,000 parts per million, and noted that newer products without elevated lead are available (NYSDOH).

Condition matters too. CDC judged the risk low on new fields, where intact fibers hold the lead, and said it rises as turf weathers and sheds lead in dust. In a July 2008 evaluation, CPSC staff found newer fields had no lead or the lowest levels, concluded young children weren’t at risk from the fields it evaluated, and said sunlight, weathering and wear could change how much lead comes off (CPSC). CPSC also asked for voluntary standards to keep lead out of future turf; ASTM F2765 is now the specification for total lead content in turf fibers made after September 1, 2009 (ASTM).

The Northern Colorado factor is sun. EPA’s rule of about 6% more UV per kilometer of elevation puts the corridor’s weather stations at roughly 9% more UV than sea level (EPA), so older turf here weathers under stronger sun. For turf already in the ground, CDC’s advice still sorts it:

• Test only nylon or nylon-blend turf that looks worn: abraded, faded or broken fibers, or visible dust. CDC advised not testing polyethylene-only turf.
• If the dust holds more than 400 ppm lead, keep children under 6 off it.
• Replace worn, dusty turf of that kind as soon as practicable.

Firestone’s code draws the same line: blades and backing must be lead-free polyethylene, polypropylene, a vegetable-based product or a blend, and “Nylon or other plastic shall be prohibited” (Firestone Development Code 16.6.4); the town’s other rules are on the Firestone area page. Old field rolls raise the same question.

02What should I ask for about PFAS?

PFAS are thousands of chemicals made of carbon chains carrying several fluorine atoms, and what most of them break down into lasts a very long time in the environment. The Toxics Use Reduction Institute gives one possible reason they are in turf: added to the plastic as an extrusion aid, so it wouldn’t stick to the machine that forms the blades. Nonprofit tests it reported in 2020 found a PFAS chemical in new turf backing, and fluorine suggesting PFAS in every blade sample (TURI).

Colorado’s rule is short. Since January 1, 2026, no one may install artificial turf containing intentionally added PFAS on any property in the state, and turf installed earlier may be maintained (C.R.S. 25-15-605, from SB24-081). The section names no document or test. Not legal advice.

On children, the record is thin. California’s toxics regulator says infants, toddlers and young children near turf may take in PFAS by mouth and skin as well as by breathing, because of hand-to-mouth behavior (DTSC). TURI noted in 2020 that exposure from playing on turf had not been assessed, and DTSC’s 2026 review still speaks of potential exposure. For scale, Colorado’s health department says contaminated drinking water, where it exists, is likely the biggest source of PFAS exposure, and diet otherwise (CDPHE).

The papers to ask for:

• A declaration and a lab report do different jobs. The maker’s dated statement that this product contains no intentionally added PFAS answers the law’s question. A lab report shows what one sample held, down to its detection limit; DTSC found makers’ published reports often stop at tens of parts per million.
• Turf and infill, each on its own paper. A turf statement covers blades and backing; infill comes from another supplier. In a Stockholm study DTSC cites, fluorine turned up in backing, filling and blades alike.
• A total-fluorine screen, not only a short list. TURI warns that missing a few named PFAS doesn’t make a material PFAS-free; a total fluorine test or TOP assay shows whether PFAS are likely present. The Synthetic Turf Council told DTSC its members pair individual-PFAS tests with a total organic fluorine test.
• Where to ask. Colorado’s health department lists the turf ban among the state’s PFAS laws and takes questions about its consumer-product bans at cdphe_pfas@state.co.us (CDPHE).

Fort Collins raised the concern early. At a January 10, 2023 work session, City Council did not support synthetic turf, “citing the potential for PFAS to leach into our waterways” (City of Fort Collins). The Land Use Code it adopted in 2025 keeps artificial turf out of development landscape plans, though existing single- and two-unit home lots are exempt (Ordinance No. 008, 2025; Fort Collins area page). Runoff and plastic bits are covered in is turf bad for the environment.

03What about crumb rubber?

Crumb rubber, the ground-tire infill on many sports fields, contains metals and organic compounds, and CPSC staff read the federal research as showing limited exposure on fields through breathing and skin (EPA, CPSC). Firestone’s code prohibits it as turf infill.

04Is the new-turf smell off-gassing, and does it matter?

The air testing we found was done on crumb-rubber sports fields, not new residential polyethylene lawns. On those fields, New York State, New York City and Connecticut sampled the air during play and found inhalation exposure insignificant and no different from grass (NYSDOH). An indoor Connecticut field ran higher, with its exhaust system off, and the authors recommended ventilating indoor fields.

So plan for indoor turf. EPA says many volatile organic compounds run consistently higher indoors, up to ten times the outdoor level (EPA). Keep a basement putting green or garage gym ventilated while the turf is new.

05What if my toddler gets infill or turf dust in their mouth?

Hand-to-mouth is the route regulators plan around. CPSC’s 2008 evaluation treated particles on a child’s hand reaching the mouth as the likeliest lead exposure, and DTSC names hand-to-mouth behavior as a PFAS route for toddlers too. CDC considers children under 6 more likely than adults to be affected by lead, and CDPHE says children 0 to 5 may be more susceptible to PFAS.

Ordinary habits cut exposure:

• Wash hands after outdoor play, and always before eating, as CPSC and CDC both advise.
• Keep snacks off the turf. CDC discouraged eating on turf fields, and CPSC advises against mouthing, chewing or swallowing playground rubber.
• Know the infill. Firestone requires a non-toxic, anti-microbial infill such as silica sand or acrylic-coated sand, and says turf and infill may not be toxic to people or pets. Options are compared in turf infill types.

CDC adds that lead safety at home counts whatever the playing surface: have a house built before 1978 inspected for lead.

06Which papers should I ask an installer for?

Ask with the quote, before you sign:

The Synthetic Turf Council’s 2013 buying guidelines already asked for lab results showing the yarn’s heavy metals, lead included, meet state and ASTM standards (STC). The same papers belong in an HOA packet; the full sheet is in what a turf spec sheet should say. For a play area, see playground turf and padded turf vs mulch under a swing set; for a dog yard, pet turf.