Pinjarra
Perth Region · Western Australia · Reporting period 2023-2024
The verdict
Pinjarra'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 96% of Perth Region supplies
Clarity
Turbidity, colour, metals
Clearer than 73% of Perth Region supplies
Taste
Sodium, chloride, TDS
Fresher than 93% of Perth Region supplies
Hardness
Calcium & magnesium
Softer than 80% of Perth Region supplies
pH balance
How close to neutral (7.0)
Further from neutral than 85% of Perth Region supplies
Full readings
Typical (mean) value at Pinjarra versus the Perth Region average.
Purity & health
| Parameter | Pinjarra | Region avg | Unit |
|---|---|---|---|
| Trihalomethanes (THMs) | 0.01 | 0.07 | mg/L |
Clarity & appearance
| Parameter | Pinjarra | Region avg | Unit |
|---|---|---|---|
| Aluminium | 0.01 | 0.01 | mg/L |
| Iron | 0.01 | 0.03 | mg/L |
Taste & saltiness
| Parameter | Pinjarra | Region avg | Unit |
|---|---|---|---|
| Sodium | 23.0 | 85.0 | mg/L |
| Chloride | 37.0 | 142 | mg/L |
| Total Dissolved Solids (TDS) | 154 | 400 | mg/L |
| Sulphate | 3.0 | 19.4 | mg/L |
Hardness & scale
| Parameter | Pinjarra | Region avg | Unit |
|---|---|---|---|
| Hardness | 60.0 | 95.7 | mg/L |
| Alkalinity | 54.0 | 83.8 | mg/L |
| Silica | 1.7 | 8.9 | mg/L |
pH balance
| Parameter | Pinjarra | Region avg | Unit |
|---|---|---|---|
| pH | 8.1 | 7.8 | pH units |
Compare nearby
All of Perth Region →Suburbs near Pinjarra
These suburbs aren't individually tested — Pinjarra 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.