Karlgarin
Great Southern Region · Western Australia · Reporting period 2023-2024
The verdict
Karlgarin's water is clearer and fresher — though it runs less pure than most of its 58 neighbours.
At a glance
Position within the Great Southern Region
Purity
By-products & nitrate
Less pure than 83% of Great Southern Region supplies
Clarity
Turbidity, colour, metals
Clearer than 76% of Great Southern Region supplies
Taste
Sodium, chloride, TDS
Fresher than 74% of Great Southern Region supplies
Hardness
Calcium & magnesium
Softer than 66% of Great Southern Region supplies
pH balance
How close to neutral (7.0)
More neutral than 67% of Great Southern Region supplies
Full readings
Typical (mean) value at Karlgarin versus the Great Southern Region average.
Purity & health
| Parameter | Karlgarin | Region avg | Unit |
|---|---|---|---|
| Trihalomethanes (THMs) | 0.10 | 0.07 | mg/L |
Clarity & appearance
| Parameter | Karlgarin | Region avg | Unit |
|---|---|---|---|
| Turbidity | 0.20 | 0.53 | NTU |
| True colour | 1.0 | 2.4 | TCU |
| Aluminium | 0.02 | 0.02 | mg/L |
| Iron | 0.10 | 0.10 | mg/L |
| Manganese | 0.00 | 0.01 | mg/L |
Taste & saltiness
| Parameter | Karlgarin | Region avg | Unit |
|---|---|---|---|
| Sodium | 38.5 | 58.9 | mg/L |
| Chloride | 83.0 | 111 | mg/L |
| Total Dissolved Solids (TDS) | 177 | 324 | mg/L |
| Sulphate | 11.0 | 16.7 | mg/L |
Hardness & scale
| Parameter | Karlgarin | Region avg | Unit |
|---|---|---|---|
| Hardness | 50.0 | 101 | mg/L |
| Alkalinity | 15.0 | 70.2 | mg/L |
| Silica | 3.3 | 8.3 | mg/L |
pH balance
| Parameter | Karlgarin | Region avg | Unit |
|---|---|---|---|
| pH | 7.9 | 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.