Serving Australian Families Since 1991
Astat Pty Ltd, trading as Diamond Spring Water and KeoSan Ruhens has supported customers in Australia for over three decades providing fresh spring water and reliable water purifier supply, installation and long-term maintenance service.
Keosan Ruhens brings new meaning to everyday life with products optimised for our customers’ lifestyles. With our R&D centre at the core of operations, we carefully oversee every stage of the process—from design and development to production, manufacturing, and quality control—across a range of products, including water purifiers, hot & cold water dispensers, and air purifiers.
By delivering safe, efficient, and reliable products, we enhance everyday convenience while applying sustainable consumption practices and environmentally friendly technologies to help build a better future.
The Beginning of a Healthy Life Starts with a Clean Glass of Water
Our water purification system uses high-performance filtration technology to effectively remove chemicals, impurities, and unpleasant odours from tap water—delivering water that is cleaner, safer, and better tasting.
- 2-stage filtration system
- 4-stage premium filtration system
- Suitable for both home and office installation
- Noticeable water quality improvement from the first use
- Experience the remarkable difference in the taste of purified water
At Keosan Ruhens, we create safe and convenient home environmental appliances powered by our proprietary technology.
A water purifier perfect for business operations
Perfect for commercial environments! This product delivers reliable operation and ease of installation and maintenance.