WestOz Water Filters is a small Perth family business run by Rob and Mavis — Mavis with a naturopath background, Rob with trade experience. Their 33 Trustpilot reviews at 4★ tell a consistent story: honest advice that doesn’t upsell, right-sizing for what customers actually need, responsive after-sales support, and Mavis who proactively follows up for filter reminders. The product range is wide — whole-home, under-sink, RO, bore water, rainwater tank, benchtop, and caravan — using standard cartridge housings with full aftermarket availability. The key caveat is WaterMark: no licence number is published, and FilterOut could not confirm a listing. The score of 7.3 reflects genuine service excellence with the ceiling limited by unverified certification. For Perth buyers who want honest independent advice without the sales tactics of larger competitors, WestOz is worth a call.
WestOz Water Filters is run by Rob and Mavis, a Perth couple who built the business around a specific set of values: honest advice, right-sizing (not upselling), knowledge drawn from both trade and health backgrounds, and genuine after-sale support. Mavis brings a naturopath perspective to water quality advice and is the primary customer contact; Rob brings plumbing trade experience.
The business operates primarily online and by appointment, with products shipped nationally and installation arranged through a network of trusted Perth metro plumbers. The range is notably wide for a small operation: whole-home systems, under-sink filtration, reverse osmosis, benchtop systems, caravan and motorhome filtration, bore water treatment, and rainwater tank systems. This breadth — particularly the bore water and tank water coverage — addresses needs that many Perth-metro-focused specialists don’t serve well.
WestOz attends Perth caravan and camping shows, including Claremont Showgrounds, where they meet customers directly. This kind of direct community presence is consistent with their customer-first business model.
Whole-Home Systems — 2-stage and 3-stage options. Addresses chlorine, sediment, calcium/scale, and taste. Mains water, rainwater tank, and bore water configurations available. Plumber installation required — WestOz coordinates through their partner plumber network.
Under-Sink Filtration — 2-stage systems for kitchen drinking water. Removes chlorine, taste, and odour. WestOz states a good handyman can install under-sink systems (plumber not always required).
Reverse Osmosis — Multi-stage RO for near-complete contaminant removal at the drinking tap. Removes heavy metals, fluoride, nitrates, chlorine, and nano-plastics. Post-membrane mineralisation and alkalising stages available. WestOz’s RO advice is notably detailed and technically grounded.
Benchtop Systems — Countertop filters that connect to the existing tap. DIY installation, no plumber required. Suitable for renters and those who want portable filtration. Free shipping on orders over $55.
Caravan and Motorhome Filtration — Portable and fixed filtration for travel. DIY installation.
Bore Water and Tank Water — Specialist configurations for properties on groundwater or collected rainwater. WestOz recommends lab testing first and provides referrals to Perth water testing labs.
Trustpilot: 4★ across 33 reviews. The review record is consistent and genuine. No negative patterns found across any publicly available review platform.
The most repeated themes in independent reviews: Mavis is highly responsive and knowledgeable; Rob gave straightforward honest advice without trying to sell the most expensive option; installation went smoothly through the recommended plumber network; the filter reminder service is proactive and the after-care is described as "A1".
Notable specifics: one customer explicitly notes that Rob recommended a smaller unit than they were expecting — "he gave me some good advice without trying to upsell me." Another describes the complete process from quotation through a delayed shipment and a change of mind, with Rob and Mavis remaining helpful throughout. A third notes WestOz as a local WA family business as a deciding factor in choosing them over national competitors.
The 33-review Trustpilot count is small but meaningful for a business of this size. For a two-person operation, 33 independent reviews with no negative patterns is a stronger signal than 200 reviews from a large company with a managed review programme.
WestOz is the kind of small operator that rarely gets found by buyers who rely on Google Ads or comparison sites — precisely because they don’t invest in either. For Perth buyers who are willing to do a small amount of research, they represent excellent value: genuine expertise, no lock-in, and an honest-advice philosophy that is well-evidenced across independent reviews. Certify the WaterMark before committing, and this is a strong recommendation.