Filter Systems Australia is one of the best-stocked online water filter retailers in Australia. Based on the Gold Coast with a physical showroom, they assemble their own WaterMark-certified range right here in Australia — a meaningful distinction from pure importers. Their 7-stage alkaline RO system is their signature product, and the range spans whole-home, undersink, benchtop, caravan, UV, and commercial. The key caveat for this site's audience: FSA does not install. If you want expert advice, competitive pricing, and the flexibility to source excellent equipment without being locked into an installer's margin, FSA is excellent. If you want a fully managed install, look at AquaCo, Pure4Sure, or Cloudtap instead.
Filter Systems Australia is a Gold Coast-based water filtration retailer and assembler with a showroom in Southport (QLD) and a national online store. They position themselves as direct importers of quality components who then assemble systems to their own specifications in Australia — a meaningful step above suppliers who simply repackage imported units.
Their signature product is the Original 7-Stage High Alkaline Magnesium & Hydrogen-Rich RO System — a custom-configured undersink RO system that claims to produce alkaline, hydrogen-rich water at pH 8.5–10. The system is WaterMark certified (AS 3497:2021, Certificate #23247) and uses NSF 42-compliant components throughout.
Their range is notably broader than most Australian installers: whole-home systems in 10" × 4.5" (small household) and 20" × 4.5" (average to large) formats, UV sanitation for tank and rainwater, caravan filters, commercial bag filters, and a full cartridge replacement programme.
One important distinction: FSA is a supply-only business. They do not install. Their website explicitly states that installation must be performed by a licensed plumber in accordance with AS 3497. This means the "install experience" dimension of our normal scoring doesn't apply — and you'll need to factor in the cost of finding and booking a plumber separately from the system purchase.
WaterMark certified AS 3497:2021, Certificate #23247 — independently verifiable. NSF 42 component compliance stated throughout range. Whole-system NSF testing (beyond WaterMark) is not published, which limits this score vs suppliers with full NSF 53 system certification.
Not applicable — FSA is supply-only. Installation must be arranged separately with a licensed plumber. We don't score install experience for supply-only suppliers.
Strong pricing transparency — full pricing published online with product codes. WaterMark certificate number published. One negative ProductReview note about a known batch issue not being proactively communicated drops this from a higher score.
Phone and email support available during business hours. Some mixed reviews about responsiveness to issues. Staff knowledge is generally praised in reviews.
Excellent. FSA uses standard sizing throughout: 10" × 2.5", 10" × 4.5", 20" × 4.5". Cartridges available from FSA and multiple other suppliers nationally. No proprietary formats found in their range.
System pricing is competitive — often significantly below installed-price competitors. Factor in separate plumber cost for installation (~$150–300 depending on your location and plumber). Over 3 years, total cost of ownership is typically lower than bundled install-and-maintain competitors.
20" × 4.5" Big Blue housings on their whole-home range — the same large format used by premium installers, capable of 40–60 L/min. Standard and appropriate for most households.
Australian-assembled and batch-tested. Components are imported but assembly and quality testing happens in Australia. Better than pure importers, not as strong as genuinely Australian-manufactured systems.
Because FSA is supply-only, understanding filter compatibility is especially important — you'll be buying your own replacements independently of any installer relationship. Their standard sizing is a genuine advantage here.
Filter Systems Australia explicitly states on their product pages: "This system must be installed by a licensed plumber in accordance with AS 3497." Full installation instructions are included in the box.
To use FSA's products for a whole-home installation, you'll need to:
1. Purchase the system from FSA (online or showroom)
2. Engage a licensed plumber in your area (try ServiceSeeking, hipages, or Airtasker for quotes)
3. Ensure you receive a Certificate of Compliance or equivalent from your plumber
The upside: you have full control over both the product selection and the installer. The downside: more coordination and you carry responsibility for ensuring the install is compliant.