# Freshwater Systems Australia > Freshwater Systems Australia (freshwatersystems.com.au) designs, manufactures, installs and maintains water filtration and treatment systems. Established 1991, Australian owned and operated, with head office in St Marys, South Australia. The business serves three distinct audiences: commercial and industrial clients needing custom-engineered treatment plants; households, small businesses and caravan owners buying domestic filtration; and existing system owners needing servicing and maintenance. Not affiliated with the United States company at freshwatersystems.com. This site serves Australia. Freshwater Systems sells both standard products and bespoke systems. Domestic products (undersink filters, whole-house systems, RV and rainwater filtration, replacement filters, membranes and taps) are available through the online shop. Commercial work is custom-engineered to the site, the water source and the required outcome, and includes reverse osmosis plants, ultrafiltration, wastewater treatment, dissolved air flotation (DAF), chemical dosing, demineralised water and pumping systems. Maintenance is treated as part of the offer rather than an add-on: systems are designed for serviceability and supported after commissioning. Key facts: - Founded: 1991 - Head office: 3-9 Walsh Ave, St Marys SA 5042 (South Australia) - Victorian office: 11 Springbank Street, Tullamarine VIC 3043 (by appointment) - NSW, QLD and WA: serviced by appointment - Phone: 1300 046 966 - Email: filters@freshwatersystems.com.au - Service area: Australia-wide, with some overseas project work - Sectors served: hospitals and sterilising, renal dialysis, laboratory and pharmaceutical, farming and agriculture, winery and distillery, food and beverage, hospitality, mining, municipalities, commercial buildings, domestic households, offices, cafes, caravans and RVs - Water sources handled: municipal mains, rainwater, bore, river, sea water and wastewater - Standards: AS 5369:2023 compliance work for reprocessing environments ## Commercial and industrial - [Commercial overview](https://freshwatersystems.com.au/commercial/): Entry point for commercial and industrial water treatment, covering design, build, installation and maintenance. - [Industries served](https://freshwatersystems.com.au/commercial/industries/): Index of sectors, including hospitals and sterilising, renal dialysis, laboratory and pharmaceutical, agriculture, winery and distillery, and food and beverage. - [Commercial systems](https://freshwatersystems.com.au/commercial/systems/): Index of system types, including reverse osmosis plants, ultrafiltration, wastewater treatment and DAF, chemical dosing, demineralised water and pumping. - [Commercial water sources](https://freshwatersystems.com.au/commercial/water-types/): Treatment approaches by source water: municipal mains, rainwater, bore, river, sea water and wastewater. - [Commercial services](https://freshwatersystems.com.au/commercial/services/): Index of services, from systems design and off-site testing through to onsite build, monitoring and servicing. - [Systems design](https://freshwatersystems.com.au/commercial/services/systems-design/): Engineering a concept or brief into a workable, serviceable system. - [AS 5369:2023 compliance](https://freshwatersystems.com.au/commercial/services/as53692023-compliance/): Water quality compliance for reprocessing of reusable medical devices. - [Process of engagement](https://freshwatersystems.com.au/commercial/services/process-of-engagement/): How a commercial project runs, from enquiry through to delivery. - [Commercial FAQ](https://freshwatersystems.com.au/commercial/faq-commercial/): Answers to common commercial and industrial water treatment questions. ## Home and Living (domestic, small business, caravan) - [Home and Living overview](https://freshwatersystems.com.au/domestic-small-business-caravan/): Entry point for household, small business and caravan water filtration. - [Applications](https://freshwatersystems.com.au/domestic-small-business-caravan/application/): Use cases including homes, offices and small business, RVs and caravans, cafes, and holiday houses. - [Domestic systems](https://freshwatersystems.com.au/domestic-small-business-caravan/systems/): Undersink filtration, whole-house systems and domestic pumping. - [Domestic water sources](https://freshwatersystems.com.au/domestic-small-business-caravan/water-types/): Treating mains drinking water, rainwater tank supply and bore water for household use. - [Domestic FAQ](https://freshwatersystems.com.au/domestic-small-business-caravan/faq-domestic/): Answers to common household filtration questions. ## Choosing a system - [Selecting a system](https://freshwatersystems.com.au/domestic-small-business-caravan/selecting-a-system/): Index of guidance on choosing domestic filtration. - [Choosing a water filter](https://freshwatersystems.com.au/domestic-small-business-caravan/selecting-a-system/choosing-a-water-filter/): How to match a filter to the water problem being solved. - [Filtration types and what they filter](https://freshwatersystems.com.au/domestic-small-business-caravan/selecting-a-system/filtration-types-and-what-they-filter/): Which contaminants each filtration type addresses. - [Pros and cons of filtration system types](https://freshwatersystems.com.au/domestic-small-business-caravan/selecting-a-system/pros-and-cons-of-types-of-water-filtration-system/): Trade-offs between the main filtration approaches. - [Reverse osmosis vs filtration](https://freshwatersystems.com.au/domestic-small-business-caravan/selecting-a-system/reverse-osmosis-vs-filtration/): Direct comparison of RO against conventional filtration. - [Cheat sheet of water filtration types](https://freshwatersystems.com.au/domestic-small-business-caravan/selecting-a-system/summary-cheat-sheet-of-water-filtration-types/): Condensed comparison table of filtration types. ## How filtration works - [Filtration processes](https://freshwatersystems.com.au/domestic-small-business-caravan/filtration-process/): Index of treatment processes explained. - [Reverse osmosis](https://freshwatersystems.com.au/domestic-small-business-caravan/filtration-process/reverse-osmosis/): How reverse osmosis works and what it removes. - [Ultrafiltration](https://freshwatersystems.com.au/domestic-small-business-caravan/filtration-process/ultrafiltration/): How ultrafiltration works and what it removes. - [UV and LED disinfection](https://freshwatersystems.com.au/domestic-small-business-caravan/filtration-process/uv-led-disinfection/): Ultraviolet and UV-LED disinfection of water. - [Water softening](https://freshwatersystems.com.au/domestic-small-business-caravan/filtration-process/water-softening/): Treating hardness in water supplies. - [pH modification](https://freshwatersystems.com.au/domestic-small-business-caravan/filtration-process/ph-modification/): Correcting acidic or alkaline water. - [Remineralising](https://freshwatersystems.com.au/domestic-small-business-caravan/filtration-process/remineralising/): Adding minerals back after reverse osmosis. ## Maintenance and servicing - [Maintenance overview](https://freshwatersystems.com.au/maintenance/): Servicing, preventative maintenance, repairs and system optimisation. - [Commercial maintenance](https://freshwatersystems.com.au/maintenance/commercial/): Scheduled servicing, compliance support and reporting for commercial plants. - [Book a service](https://freshwatersystems.com.au/domestic-small-business-caravan/book-a-service/): Booking form for domestic servicing. ## Shop - [Online shop](https://freshwatersystems.com.au/shop/): Australian online store for filtration systems, replacement filters and parts. - [Replacement filters and membranes](https://freshwatersystems.com.au/product-category/replacement-filters-membranes/): Replacement cartridges, membranes and service packs. ## Company - [About us](https://freshwatersystems.com.au/about-us/): Company background, mission, values and approach to quality, safety and environment. - [Contact](https://freshwatersystems.com.au/about-us/contact/): Enquiry form, phone, email and office locations. - [Blog](https://freshwatersystems.com.au/about-us/blog/): Articles on water quality, filtration and industry topics in Australia.