With so many water filtration options available, it’s natural to wonder: Is a basic twin undersink system enough, or should I invest in a 5-stage reverse osmosis system? In this guide, we’ll break down the differences, explain what each system removes, and help you choose the best water filter for your Gold Coast home.
💧 What’s the Difference?
Twin Undersink Carbon Filter Systems
These systems typically use:
- Sediment filter – to catch dirt, rust, and particles
- Carbon block filter – to remove chlorine, bad taste, odour, and some chemicals
They’re ideal for:
- Families wanting better taste & chlorine-free water
- Homes with already treated municipal tap water
- Low-maintenance, budget-friendly filtration
🔗 View our Twin Undersink System
5 Stage Reverse Osmosis Systems
These systems go much further and include:
- Sediment Filter – catches dust, sand, silt
- Carbon Block – removes chlorine & organics
- RO Membrane – filters up to 99% of heavy metals, fluoride, PFAS
- Remineraliser – adds back healthy minerals
- Polishing Carbon (CTO) – improves final taste
They’re ideal for:
- Health-conscious families
- Homes with older pipes or questionable water quality
- Filtering out fluoride, lead, PFAS, and microplastics
📊 Side-by-Side Comparison
| Feature | Twin Undersink Filter | 5-Stage Reverse Osmosis |
|---|---|---|
| Removes Chlorine, Taste, Odour | ✅ Yes | ✅ Yes |
| Removes Heavy Metals & Fluoride | ❌ No | ✅ Yes (up to 99%) |
| Removes PFAS & Microplastics | ❌ No | ✅ Yes |
| Improves Water Taste | ✅ Yes | ✅ Exceptional |
| Adds Healthy Minerals | ❌ No | ✅ Yes (via remineraliser) |
| Cost | 💲 Affordable | 💲💲 Higher upfront cost |
| Maintenance | 🔁 Easy cartridge change | 🔁 Slightly more involved |
🤔 Which Is Best for Your Home?
If you're simply trying to improve taste and remove chlorine, the Twin Undersink Filter is a solid choice.
But if you're concerned about fluoride, PFAS, heavy metals, or want the purest possible water, a 5‑Stage RO System is worth the investment.
💡 Pro Tip: Gold Coast homes often benefit from RO systems due to treated municipal water still containing fluoride and micro-contaminants.