Is Sensitive Laundry Liquid septic and grey water compatible?Updated 3 days ago
TL;DR: Sensitive Laundry Liquid is septic compatible when used as directed. The formula carries no phosphates, no dyes, no VOCs and no chlorine, and it's low in sodium, so it won't upset the microbes a treatment system relies on. That makes it a fit for rural properties, caravans, motorhomes and boats.
Is Sensitive Laundry Liquid septic and grey water compatible?
✓ What's not in the formula
Sensitive Laundry Liquid carries no phosphates, which are the ingredient class most often linked to disrupted treatment systems and algal blooms in waterways. It also carries no dyes, no VOCs and no chlorine, and it's low in sodium. The ingredients break down under standard wastewater treatment conditions.
✓ Where it works well
Suitable for rural and regional homes on a septic tank, off-grid properties running a grey water reuse system, and mobile setups like caravans, camper vans, motorhomes and boats. The bag-in-box pack travels better than a rigid bottle because there's nothing rattling around in a cupboard, and it uses 80 to 90 per cent less plastic than a rigid container of the same volume.
What does using it as directed actually mean?
✓ The three rules
Use only as directed. Match the dose to the load size. A normal load of 3 to 6 kg takes 24 mL, which is 6 full pumps of the Laundry Pump or the 24 mL marker on the Laundry Dosing Cup.
Never pour undiluted product into a septic or grey water system. It belongs in the machine's dispenser or drum, diluted by the wash water.
Avoid excessive use. Doubling the dose doesn't get clothes cleaner, and a treatment system handles a steady, measured load far better than an occasional flood of product.
Your septic system manufacturer's guidance sits above all of this. If they specify something different, follow them.
Can I put the grey water on my garden?
⚠ Three things decide it, and they're specific to your place
Your soil type. Soils differ in how they take up and drain laundry water, and that changes what a garden can handle over a season.
The plant species. Ornamentals are more forgiving than edible crops. Anything you plan to eat is held to a stricter standard, so check that first.
Your local council rules. Grey water reuse is regulated at council level and the rules differ across Australia. Confirm what applies at your address before you plumb anything in.
Those three factors are about your property, not about the product. Once you've checked them, the three rules above are what keep the wash side of it right.
Around 60 washes per box. Good Environmental Choice Australia (GECA) certified, Sensitive Choice approved, Dermatest tested. Septic compatible when used as directed. Made in Australia.
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Last reviewed: September 2026 · Koh Australia