Is Tap Water Safe to Drink in Perth?
Yes, tap water in Perth is safe to drink. Water Corporation of Western Australia supplies Perth from a combination of desalination plants, groundwater, and surface-water catchments, all treated to meet Australian Drinking Water Guidelines.
Water Source
Perth’s water comes from two seawater desalination plants (Perth Seawater at Kwinana and Southern Seawater at Binningup), the Gnangara and Jandakot groundwater mounds, and surface-water dams in the Darling Range. As rainfall has declined due to climate change, desalination now provides roughly half of Perth’s supply.
Contaminants & Concerns
No significant health concerns. Perth has been a global leader in adapting to climate-driven water scarcity through desalination and managed aquifer recharge. The water is fluoridated and chlorinated, with comprehensive quality monitoring.
Water Quality Data
Key contaminants detected vs. regulatory limits. All values from the most recent published report — Source: Water Corporation 2024 Water Quality Report.
| Contaminant | Detected | Limit | Status |
|---|---|---|---|
| Chlorine (residual) | 0.7 mg/L | 5.0 mg/L | ✓ |
| Fluoride | 0.71 mg/L | 1.5 mg/L | ✓ |
| Lead | 1.8 µg/L | 10.0 µg/L | ✓ |
| Nitrate (as NO₃) | 4.6 mg/L | 50.0 mg/L | ✓ |
✓ = below limit ⚠ = above health goal ✗ = exceeds guideline
Tips
- •Perth’s water tastes slightly different depending on your suburb — desalination zones tend to taste slightly different from groundwater zones
- •The water is safe and fluoridated throughout the entire metropolitan area
- •Free bottle-fill stations are widespread in Kings Park, along the Swan River foreshore, and in suburban parks
Frequently Asked Questions
Sources & References
The safety rating and guidance on this page draw on the following sources. See our full methodology.
- •WHO Guidelines for Drinking-water Quality
- •CDC Travelers' Health destination pages
- •The municipal water utility's published quality data