Are Flushable Wipes Really Flushable? GD4, IWSFG and What Brands Can Claim

A flushable wipe has to do two jobs that pull in opposite directions. It must stay strong enough in the pack and in use, then lose that strength quickly once it is moving through drain lines and sewers. Conventional wipes are designed to stay intact, often with synthetic fibres such as polyester. Flushable wipes are built from short, plant-based fibres, such as wood pulp and regenerated cellulose, that can come apart under the mechanical action of water.

“Flushable” is therefore a performance claim, not a material description. The same fibre types can produce a wipe that passes one test and fails another, depending on how the web is formed and bonded, the sheet weight (GSM) and the lotion. That is why every credible flushable claim depends on test results for the specific product.

Four reference documents come up most often in buyer conversations. They were written by different groups and use different pass criteria, so a report under one standard does not automatically prove compliance with another.

The practical difference: GD4 was developed by industry, while the IWSFG specifications were written by water utilities to protect their networks. Their pass criteria are not interchangeable: a report under one does not show the product passes the other. Retailers and water companies in some markets look specifically for IWSFG or AS/NZS 5328 results. Decide which standard your target market and retail buyers expect before you choose a substrate.

Labelling rules matter as much as the flushable product itself, because most wet wipes sold are not flushable:

• GD4 Code of Practice. Under Edition 4, all baby wipes must carry the “Do Not Flush” (DNF) logo, placed on the front or top of the pack and reasonably visible near the point of dispensing.
• California (AB 818). Covered premoistened nonwoven wipes manufactured on or after 1 July 2022 must be labelled clearly and conspicuously with the phrase “Do Not Flush” and the related symbol. Placement rules depend on the pack type. Covered entities may not make flushability representations about those wipes, and civil penalties can reach $2,500 per day, up to $100,000 per violation.
• Australia and New Zealand. AS/NZS 5328 also provides labelling guidance and requirements for products likely to be disposed of via the toilet.

Other jurisdictions have their own wipes labelling laws, so check each state or country on your distribution list. For a private label range that includes both flushable and non-flushable SKUs, artwork control matters: keep the DNF symbol on every non-flushable pack, and never reuse a flushable claim panel on a non-flushable product.

Yes. Moist toilet tissue is on the list of products covered by the UK ban on wet wipes containing plastic, which starts in Wales on 18 December 2026 and in England on 19 May 2027 (see our UK plastic wet wipes ban guide). Being plastic-free does not make a wipe flushable, though, and a flushable claim needs its own test evidence. Most flushable constructions are already plastic-free, but confirm the fibre composition and any binder, as for any other wipe.

Flushable wipes generally use dispersible nonwovens made from short cellulose fibres, typically wood pulp, often combined with regenerated cellulose such as viscose or lyocell. The way the web is formed and bonded (for example wetlaid, or a lightly hydroentangled web) is what lets it come apart in water.

Because of these trade-offs, ask for the test report on the exact construction you will buy (substrate supplier, fibre blend and GSM), not on a similar product.

1. Which standard and version? GD4 (2018), IWSFG PAS 1–3 (2020) or AS/NZS 5328:2022, and which one your target retailer accepts.
2. Which tests were run? A single slosh-box result is not a full flushability assessment. Ask for the complete set of tests the standard requires.
3. Which product was tested? The substrate supplier, fibre blend, GSM and sheet size should match your specification.
4. Who ran the tests and when? The laboratory, report date and report holder (often the substrate supplier rather than the converting factory).
5. Is it plastic-free? Ask for a composition declaration covering fibres and binder.
6. What does the pack say? Get the claim wording and logos checked against the standard’s labelling rules and local law.

At LX Wipe we specify flushable wipes to the standard you name and ask the partner factory or substrate supplier for the reports that cover that construction. We do not claim company-level flushability certification. Reports belong to whoever commissioned the tests, and the scope of each report is stated on the document.