Dalyellup
South West Region · Western Australia · Reporting period 2023-2024
The verdict
Dalyellup's water runs harder and saltier than most other localities in the South West Region.
At a glance
Position within the South West Region
Purity
By-products & nitrate
About average for the South West Region
Clarity
Turbidity, colour, metals
About average for the South West Region
Taste
Sodium, chloride, TDS
Saltier than 70% of South West Region supplies
Hardness
Calcium & magnesium
Harder than 75% of South West Region supplies
pH balance
How close to neutral (7.0)
About average for the South West Region
Full readings
Typical (mean) value at Dalyellup versus the South West Region average.
Purity & health
| Parameter | Dalyellup | Region avg | Unit |
|---|---|---|---|
| Trihalomethanes (THMs) | 0.05 | 0.05 | mg/L |
Clarity & appearance
| Parameter | Dalyellup | Region avg | Unit |
|---|---|---|---|
| Turbidity | 0.30 | 0.45 | NTU |
| Iron | 0.05 | 0.05 | mg/L |
| Manganese | 0.01 | 0.01 | mg/L |
Taste & saltiness
| Parameter | Dalyellup | Region avg | Unit |
|---|---|---|---|
| Sodium | 76.0 | 58.5 | mg/L |
| Chloride | 103 | 98.2 | mg/L |
| Total Dissolved Solids (TDS) | 412 | 324 | mg/L |
| Sulphate | 15.0 | 16.9 | mg/L |
Hardness & scale
| Parameter | Dalyellup | Region avg | Unit |
|---|---|---|---|
| Hardness | 76.0 | 83.9 | mg/L |
| Alkalinity | 130 | 81.8 | mg/L |
| Silica | 16.5 | 11.0 | mg/L |
pH balance
| Parameter | Dalyellup | Region avg | Unit |
|---|---|---|---|
| pH | 8.0 | 7.7 | pH units |
Compare nearby
All of South West Region →Suburbs near Dalyellup
These suburbs aren't individually tested — Dalyellup 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 South West 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.