Household chemicals, PFAS and the swaps that actually matter

PFAS are the chemicals that promised a life without stains and then declined to leave. They sit in the spray you used on the new sofa, in a lipstick that claimed to last through dinner, in the tent that still beads water after a decade in the garage. They also sit, at a scale no cupboard can match, in groundwater near the air bases and training grounds where firefighting foam was poured as if the earth were a drain. The first job of a household essay is to keep those two facts in the same room without pretending they are the same job.

This belongs in The House because most Australians will meet PFAS as a product label, a news item about a town they do not live in, or a quiet dread in the cosmetics aisle. The useful question is not whether the chemistry is everywhere. It is. The useful question is what a laundry, a bathroom and a weekend of shopping can change, and what only a catchment, a regulator and a long cleanup can.

A family of chemicals that do not get bored

PFAS — per- and polyfluoroalkyl substances — are a large family, not a single villain with a memorable surname. The trait they share is a carbon–fluorine bond that does not get tired. That is why a raincoat works in a southerly and why the same chemistry is found in blood, in soil, and in a creek a long way from the shop. “Forever chemicals” is a slogan. Persistence is the fact.

Australia has been late and then suddenly busy. The industrial history that matters here is not only a factory in another hemisphere. It is the foam used for decades at civilian airports, Defence bases and training grounds — Williamtown, Oakey, Katherine, Richmond, Pearce, and a list that keeps growing as testing grows. Those sites are catchment stories. They are not solved by swapping a frying pan.

Household products are a smaller source. They matter because they keep arriving, sit in indoor dust, and are one of the few parts a person can stop funding. They do not matter in the way a foam plume matters. Flatten those scales and you will either panic in the bathroom or shrug at the base.

Stain treatments, outdoor gear, and the promise of a life without marks

The stain-resistant sofa, the “easy-clean” carpet, the spray you put on the kids’ school shoes before term: these were sold as hygiene and as class. A mark on fabric used to be a mark. Then it became a failure of chemistry. PFAS-based treatments made oil and water retreat. They also left a residue that does not retreat.

You do not need a laboratory in the lounge to act. Stop spraying. Do not buy the next sofa because the tag says it will forgive red wine. A washable cover and a slightly more careful household are older technologies and they do not travel in dust the same way. If the carpet is already treated, live with it until it is worn out. Landfilling a room of synthetics in a burst of virtue is not a cleanup. It is a relocation.

Outdoor gear is a similar bargain. Waterproofing on jackets, tents and boots has often used fluorinated chemistry because it works in weather that would humble wax. Newer treatments exist, and some of them work less well in a week of Tasmanian drizzle. That is the honest trade. Re-proof with a non-fluorinated product if you must. Use the jacket out. When it dies, choose the next one with a plainer claim. Takeaway wrappers are a quieter cousin: a plate you already own is the Tuesday-scale move.

Cosmetics, and the longevity that outlives the evening

Some cosmetics — long-wear foundations, waterproof mascaras, certain sunscreens and the odd “smoothing” cream — have used PFAS to make a product stay put through heat, sweat and a night that ran late. Not all of them. Not always labelled in language a tired person can parse at a chemist at 6.40pm. “Fluoro”, “perfluoro”, PTFE and a handful of related names are the clues. Absence of those names is not a sacrament. It is a start.

This is not a sermon against makeup. A lipstick you use daily is a different object from a sofa you sprayed once in 2019. Start with the daily face and the daily sunscreen, and look for a PFAS-free claim you can test against an ingredients list, not a mood. Then stop. A cabinet emptied in a moral fever will refill with something else.

Indoor dust is where a lot of household PFAS quietly live. They abrade off treatments and settle with the rest of the week. A damp cloth and a vacuum with a decent filter are not glamorous. They are more useful than a speciality “detox” spray. The wider argument about what we breathe in a closed summer house sits in indoor air quality in Australian homes. PFAS are one passenger in that air. They are not the only one.

The foam that made a suburb into a catchment

Aqueous film-forming foam — the kind used on fuel fires — was a genuine safety tool. It was also, in older formulations, a generous donor of PFAS to soil and groundwater. Training grounds are worse than accident sites because training is repetitive. Foam was practised into the ground as if persistence were someone else’s problem.

If you live near a listed investigation site, the household essay changes key. You are not choosing a mascara. You are reading a water advisory, asking whether the tank and the bore are tested, whether eggs from backyard chooks are part of the advice, whether the kids still play in the drain that looks like a creek. That is a public-health and a cleanup problem. It is also a justice problem: the people who did not choose the foam are the ones who now live with the plume.

Do not let a national conversation about “everywhere chemicals” dissolve that specificity. A renter in Marrickville and a family near Williamtown do not have the same homework. One can change a shopping list. The other needs a government that will fund a treatment plant.

A stain spray is a habit you can retire this weekend. A foam plume is a civic debt. Confusing them is how a household burns its energy on the smaller fire.

What a household can change

A short list, written for a real laundry:

• Stop buying stain-guard sprays, “stay-clean” treatments and fluorinated re-proofers.
• Prefer untreated upholstery and a washable throw over a sofa that advertises immortality.
• Check daily cosmetics and sunscreens for fluoro chemistry; keep the ones that earn their place.
• Keep takeaway grease off the daily plate when you can.
• Dust and vacuum as if indoor air were a room you share with your future self.
• If you have a rainwater tank near a known site, ask for advice before you treat the tank as innocence.

The rest of the cupboard — bleach, pine disinfectant, the spray that smells like a hotel — is a different argument, and a more immediate one for indoor air. Choosing safer cleaning products is the companion for that shelf. A cast-iron pan is a fine cookware swap if you will actually use it; a cupboard of abandoned iron is not a health intervention.

What a household cannot mop

You cannot filter a Defence plume with a moment of consumer virtue. You cannot make a closed landfill unmake itself. You cannot, by buying a different schoolbag, restore a bore on a farm that sat down-gradient of a training pad. Those are catchment, licensing and remediation problems. They need monitoring wells, treatment, and the unfashionable work of deciding who pays.

They also need households to stay interested after the product-swap article ends. Show up when a local investigation reports. Read the map. Support the boring budget line that keeps a treatment plant running after the cameras leave. The chemistry is persistent. Attention usually is not.

A suburb is a set of rooms and a set of drains. PFAS move through both. The rooms are yours to edit. The drains are ours, which is a harder sentence and the one that actually matches the scale of the foam.