Mt. Hawthorn
Perth Region · Western Australia · Reporting period 2023-2024
The verdict
Mt. Hawthorn's water runs much saltier and harder than most other localities in the Perth Region.
At a glance
Position within the Perth Region
Purity
By-products & nitrate
About average for the Perth Region
Clarity
Turbidity, colour, metals
About average for the Perth Region
Taste
Sodium, chloride, TDS
Saltier than 91% of Perth Region supplies
Hardness
Calcium & magnesium
Harder than 77% of Perth Region supplies
pH balance
How close to neutral (7.0)
About average for the Perth Region
Full readings
Typical (mean) value at Mt. Hawthorn versus the Perth Region average.
Purity & health
| Parameter | Mt. Hawthorn | Region avg | Unit |
|---|---|---|---|
| Trihalomethanes (THMs) | 0.10 | 0.07 | mg/L |
| Nitrate | 1.8 | 2.3 | mg/L |
Clarity & appearance
| Parameter | Mt. Hawthorn | Region avg | Unit |
|---|---|---|---|
| Iron | 0.03 | 0.03 | mg/L |
| Manganese | 0.01 | 0.01 | mg/L |
Taste & saltiness
| Parameter | Mt. Hawthorn | Region avg | Unit |
|---|---|---|---|
| Sodium | 126 | 85.0 | mg/L |
| Chloride | 191 | 142 | mg/L |
| Total Dissolved Solids (TDS) | 564 | 400 | mg/L |
| Sulphate | 29.0 | 19.4 | mg/L |
Hardness & scale
| Parameter | Mt. Hawthorn | Region avg | Unit |
|---|---|---|---|
| Hardness | 110 | 95.7 | mg/L |
| Alkalinity | 123 | 83.8 | mg/L |
| Silica | 16.5 | 8.9 | mg/L |
pH balance
| Parameter | Mt. Hawthorn | Region avg | Unit |
|---|---|---|---|
| pH | 7.9 | 7.8 | pH units |
Compare nearby
All of Perth Region →Suburbs near Mt. Hawthorn
These suburbs aren't individually tested — Mt. Hawthorn 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.