Is Tap Water Safe to Drink in Boulder, WA?
Postcode 6432 · Supplied by Water Corporation · Current data · annual report
Yes, safe to drink
Tap water in Boulder meets Australian Drinking Water Guidelines across all tested parameters. The water is safe to drink straight from the tap.
Compare with nearby suburbs: Kalgoorlie , Kalgoorlie Po , Broadwood
ADWG compliance check
Each parameter tested against Australian Drinking Water Guidelines
| Parameter | Value | Unit | ADWG Guideline | Status |
|---|---|---|---|---|
| Alkalinity | 73 | mg/L CaCO3 | No limit | Measured |
| Aluminium | 0.009 | mg/L | < 0.2 | Good |
| Chloride | 190 | mg/L | < 250 | Good |
| Hardness | 104 | mg/L CaCO3 | < 200 | Good |
| Iron | 0.005 | mg/L | < 0.3 | Good |
| Manganese | 0.002 | mg/L | < 0.1 | Good |
| pH | 8.54 | pH units | 6.5 – 8.5 | Outside range |
| Sodium | 110 | mg/L | < 180 | Good |
| Sulfate | 31 | mg/L | < 500 | Good |
| Total Dissolved Solids | 469 | mg/L | < 600 | Good |
| Colour | 1 | HU | < 15 | Good |
| Turbidity | 0.1 | NTU | < 5 | Good |
| Fluoride | 0.82 | mg/L | < 1.5 | Good |
| Nitrate | 0.4 | mg/L | < 50 | Good |
| Trihalomethanes | 0.032 | mg/L | < 0.25 | Good |
Contaminant check
Parameters that exceed or approach ADWG limits
pH — 8.54 pH units
Exceeds ADWG guideline of 6.5 – 8.5 pH units.
What's in your water
Key parameters explained in plain English
Water Hardness
At 104 mg/L, Boulder's water is classified as moderately hard. You may notice some limescale buildup in kettles and appliances. The ADWG aesthetic guideline is 200 mg/L.
pH Level
pH of 8.54 is outside the recommended range of 6.5–8.5. Water outside this range may taste metallic or cause pipe corrosion.
Fluoride
Fluoride measured at 0.82 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine (Disinfection)
Chlorine data is not currently available for Boulder.
E. coli
E. coli data is not currently available for Boulder.
About your water supply
- Water Utility
- Water Corporation
- Supply Zone
- Goldfields and Agricultural
Frequently asked questions
Is Boulder tap water safe?
What contaminants are in Boulder water?
Should I filter my tap water in Boulder?
Guides for Perth and WA
In-depth articles on the water supply that serves Boulder
Learn more about water in Boulder
Is tap water safe in nearby suburbs?
Safety assessments for suburbs on the same water supply
Utility reports average the grid — not your home
Boulder's water meets ADWG standards at the source, but old pipes, roof tanks, and ageing plumbing can add lead, copper or bacteria before the water reaches your tap. These won't show up in your utility report.
Check your own tap before buying a filter or assuming the suburb average matches your home.
Tetra
EasyStrips 6-in-1 Water Test (100 strips)
4.6 · 8,650 ratings on Amazon
Tests 6 parameters in 60 seconds: hardness, chlorine, pH, nitrate, nitrite, alkalinity. Cheapest way to verify your utility data.
Test my tap →Sponsored Amazon link. Check Amazon for current price and availability.
Heavy Metals
Drinking Water Test Kit (Lead, Copper, Iron, Mercury)
4.2 · 250 ratings on Amazon
20 tests. Detects lead, copper, iron, mercury — the things utility reports miss. Mobile-app results, EPA-standard thresholds.
Check metals kit →Sponsored Amazon link. Check Amazon for current price and availability.
Recommended water filters for Boulder
Based on Boulder's water profile — matched to the parameters tested above
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
A reliable marella 2.4l fridge water filter jug (maxtra+) suitable for Boulder's water profile.
Waterdrop
TSA Under-Sink Filter (Fluoride + PFAS)
4.4 · 2,237 ratings on Amazon
A reliable tsa under-sink filter (fluoride + pfas) suitable for Boulder's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
A reliable 8.5l stainless steel gravity system suitable for Boulder's water profile.
Important disclaimer: The safety assessment on this page is for general informational purposes only and does not constitute medical advice, health recommendations, or a guarantee of water safety. Our assessment is based on comparison against Australian Drinking Water Guidelines (ADWG) using data from Water Corporation (annual report). This data reflects conditions at the time of utility testing and may not reflect real-time water quality at your specific tap. Water quality can be affected by local plumbing, building age, seasonal variations, and other factors not captured in utility reports. If you have health concerns about your drinking water, please consult a qualified health professional or contact your local water utility directly. See our Terms of Use.