Biodegradability vs. Compostability

Biodegradability vs. Compostability

Understanding the difference between biodegradable wipes and compostable wipes - and why these terms are often misunderstood by consumers.

1. Why These Terms Confuse Consumers

Many wipes are marketed using buzzwords like "eco-friendly," "green," "biodegradable," or "compostable." But these terms have very different meanings - and they do not guarantee flushability or environmental safety.

This section explains the differences clearly and simply.

2. What Does “Biodegradable” Mean?

A biodegradable material can be broken down naturally by microorganisms (bacteria, fungi, etc.) over time.

Key characteristics:

• Breaks down in natural environments (soil, water, compost, etc.)
• Timeframe can vary widely - weeks, months, or even years
• No guarantee of rapid breakdown in sewage systems
• No guarantee of flushability

Problems with “biodegradable” labeling:

• synthetics may degrade extremely slowly,
• some materials only biodegrade in industrial conditions,
• the term is not strictly regulated in many countries.

A wipe can be biodegradable and STILL be unsafe to flush.

3. What Does “Compostable” Mean?

Compostable materials break down into natural components (CO₂, water, biomass) under controlled composting conditions.

Two types of compostability:

• Home compostable - breaks down in backyard compost piles.
• Industrial compostable - requires high heat and controlled environments.

Requirements for compostable certification:

• meets ASTM D6400, EN 13432, or similar standards,
• breaks down within a specific timeframe,
• leaves no toxic residue.

Compostable wipes are NOT flushable unless specifically engineered to disperse.

4. Biodegradable vs. Compostable: Key Differences

Biodegradable

• Breaks down naturally
• Timeframe varies widely
• Not necessarily quick
• Not necessarily safe for sewage systems

Compostable

• Breaks down under specific composting conditions
• Certified standards exist
• Faster breakdown under controlled environments
• Still not guaranteed flushable

5. Why These Terms Do NOT Mean Flushable

Flushability requires the wipe to rapidly disperse in water, which neither “biodegradable” nor “compostable” guarantees.

To be flushable, a wipe must:

• separate quickly into small fibers,
• avoid clogging pumps and pipes,
• contain no plastic fibers,
• pass GD4 or IWSFG tests.

Compostable wipes often rely on fibers that do not disperse quickly enough in sewer conditions.

6. The Environmental Advantages of Plant-Based Flushable Wipes

Truly flushable wipes use plant-based fibers designed for:

• break down like toilet paper - third-party slosh box tested,
• plastic-free biodegradation,
• safe wastewater behavior.

These wipes are BOTH biodegradable and flushable - but not necessarily compostable.

7. Consumer Misconceptions

• “Biodegradable” does not mean it will break down in toilets.
• “Compostable” wipes may contain strong fibers that resist dispersal.
• Plastic-free does not guarantee flushability.
• Compostable wipes should never be flushed unless certified flushable.

8. Key Takeaways

• Biodegradable = breaks down naturally, but time varies.
• Compostable = breaks down under controlled conditions with certification.
• Neither term guarantees flushability.
• For flushable wipes, dispersibility standards matter most.
• Plant-based, cellulose-rich fibers offer the best environmental profile.

Understanding these distinctions helps consumers choose wipes that are genuinely safer for both plumbing and the planet.