Harrismith
Great Southern Region · Western Australia · Reporting period 2023-2024
The verdict
Harrismith's water runs much less pure and much further from neutral pH than most other localities in the Great Southern Region.
At a glance
Position within the Great Southern Region
Purity
By-products & nitrate
Less pure than 100% of Great Southern Region supplies
Clarity
Turbidity, colour, metals
About average for the Great Southern Region
Taste
Sodium, chloride, TDS
About average for the Great Southern Region
Hardness
Calcium & magnesium
About average for the Great Southern Region
pH balance
How close to neutral (7.0)
Further from neutral than 98% of Great Southern Region supplies
Full readings
Typical (mean) value at Harrismith versus the Great Southern Region average.
Purity & health
| Parameter | Harrismith | Region avg | Unit |
|---|---|---|---|
| Trihalomethanes (THMs) | 0.14 | 0.07 | mg/L |
Clarity & appearance
| Parameter | Harrismith | Region avg | Unit |
|---|---|---|---|
| Turbidity | 0.30 | 0.53 | NTU |
| Aluminium | 0.01 | 0.02 | mg/L |
| Iron | 0.12 | 0.10 | mg/L |
| Manganese | 0.01 | 0.01 | mg/L |
Taste & saltiness
| Parameter | Harrismith | Region avg | Unit |
|---|---|---|---|
| Sodium | 39.3 | 58.9 | mg/L |
| Chloride | 84.0 | 111 | mg/L |
| Total Dissolved Solids (TDS) | 188 | 324 | mg/L |
| Sulphate | 11.0 | 16.7 | mg/L |
Hardness & scale
| Parameter | Harrismith | Region avg | Unit |
|---|---|---|---|
| Hardness | 53.0 | 101 | mg/L |
| Alkalinity | 22.0 | 70.2 | mg/L |
| Silica | 3.5 | 8.3 | mg/L |
pH balance
| Parameter | Harrismith | Region avg | Unit |
|---|---|---|---|
| pHAbove ADWG | 9.5 | 7.7 | pH units |
Compare nearby
All of Great Southern Region →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 Great Southern 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.