Mandurah
Perth Region · Western Australia · Reporting period 2023-2024
The verdict
Mandurah's water is much purer and much fresher — though it runs much further from neutral pH than most of its 27 neighbours.
At a glance
Position within the Perth Region
Purity
By-products & nitrate
Purer than 94% of Perth Region supplies
Clarity
Turbidity, colour, metals
About average for the Perth Region
Taste
Sodium, chloride, TDS
Fresher than 94% of Perth Region supplies
Hardness
Calcium & magnesium
Softer than 89% of Perth Region supplies
pH balance
How close to neutral (7.0)
Further from neutral than 100% of Perth Region supplies
Full readings
Typical (mean) value at Mandurah versus the Perth Region average.
Purity & health
| Parameter | Mandurah | Region avg | Unit |
|---|---|---|---|
| Trihalomethanes (THMs) | 0.02 | 0.07 | mg/L |
| Nitrate | 0.40 | 2.3 | mg/L |
Clarity & appearance
| Parameter | Mandurah | Region avg | Unit |
|---|---|---|---|
| Aluminium | 0.03 | 0.01 | mg/L |
| Iron | 0.01 | 0.03 | mg/L |
Taste & saltiness
| Parameter | Mandurah | Region avg | Unit |
|---|---|---|---|
| Sodium | 22.0 | 85.0 | mg/L |
| Chloride | 38.0 | 142 | mg/L |
| Total Dissolved Solids (TDS) | 147 | 400 | mg/L |
| Sulphate | 2.0 | 19.4 | mg/L |
Hardness & scale
| Parameter | Mandurah | Region avg | Unit |
|---|---|---|---|
| Hardness | 54.0 | 95.7 | mg/L |
| Alkalinity | 51.0 | 83.8 | mg/L |
| Silica | 1.4 | 8.9 | mg/L |
pH balance
| Parameter | Mandurah | Region avg | Unit |
|---|---|---|---|
| pHAbove ADWG | 8.5 | 7.8 | pH units |
Compare nearby
All of Perth Region →Suburbs near Mandurah
These suburbs aren't individually tested — Mandurah is their closest monitored supply point.
Data & methodology
Data source: Water Corporation of WA Drinking Water Quality Annual Report 2023-2024.
Regional ranking: Each measured parameter is ranked against every other locality in the Perth Region using the typical (mean) reading. Lower readings rank better, except pH where the score is distance from neutral (7).
ADWG safety check: Every reading is independently checked against the NHMRC Australian Drinking Water Guidelines; any value above the limit is flagged regardless of how it compares to neighbours.