The Short Answer
Origin Aqua systems work differently from traditional chlorine pools. Your pool is home to a carefully balanced biological ecosystem — and tap water, despite appearing clean, contains Phosphate (algae food), chemicals and minerals that can disrupt that balance and affect your water quality.
What's in Tap Water?
Mains tap water is treated for safe drinking, not for biological pool systems. It typically contains:
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Phosphates and trace nutrients — these can fuel unwanted algae or microbial growth.
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Chlorine or chloramine — added by water authorities to kill bacteria. In a traditional pool this is expected, but in your Origin Aqua system it can interfere with the beneficial biology that keeps your water clear and balanced.
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Minerals and dissolved solids — including calcium, magnesium, and other compounds that can cause scaling, cloudiness, or surface staining over time.
Over time, repeated top-ups with untreated tap water can gradually shift your water chemistry away from the stable balance your system relies on.
What About Hosing Down the Pool Area?
It's not just about filling — how you clean around your pool matters too.
When you hose down your coping, surrounds, or pool deck, that wash water picks up whatever is on the surface: dust, fertilisers, pesticides, sunscreen residue, and more.
If that water drains into the pool rather than away from it, those contaminants enter your water. Always ensure your surrounds are cleaned so that water drains away from the pool edge.
What Should I Do Instead?
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Top-up water should always be treated via the Origin Aqua top up system as recommended by your Origin Aqua installer
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When cleaning pool surrounds, direct the hose so water flows away from the pool, not towards it.
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Avoid runoff from garden beds, lawns, or any area where fertilisers or pesticides have been applied.
Why This Matters More for Your System
Traditional chlorine pools can tolerate tap water top-ups because the chemistry is heavily managed with chemicals.
Your Origin Aqua system is designed to avoid that — which means it needs a little more care about what enters the water.
Your pool is maintained as a phosphate-limited environment — keeping phosphate levels low is one of the key mechanisms keeps your water crystal clear and prevents algal blooms from taking hold.
The good news is that once your system is established and these simple habits are in place, your pool largely takes care of itself.
For further guidance, contact the Origin Aqua support team at support@origin-aqua.com or visit www.origin-aqua.com