Ongerup
Great Southern Region · Western Australia · Reporting period 2023-2024
The verdict
Ongerup's water is much fresher and much purer — though it runs much cloudier than most of its 58 neighbours.
At a glance
Position within the Great Southern Region
Purity
By-products & nitrate
Purer than 95% of Great Southern Region supplies
Clarity
Turbidity, colour, metals
Cloudier than 92% of Great Southern Region supplies
Taste
Sodium, chloride, TDS
Fresher than 99% of Great Southern Region supplies
Hardness
Calcium & magnesium
Softer than 94% of Great Southern Region supplies
pH balance
How close to neutral (7.0)
About average for the Great Southern Region
Full readings
Typical (mean) value at Ongerup versus the Great Southern Region average.
Purity & health
| Parameter | Ongerup | Region avg | Unit |
|---|---|---|---|
| Trihalomethanes (THMs) | 0.03 | 0.07 | mg/L |
Clarity & appearance
| Parameter | Ongerup | Region avg | Unit |
|---|---|---|---|
| Aluminium | 0.03 | 0.02 | mg/L |
Taste & saltiness
| Parameter | Ongerup | Region avg | Unit |
|---|---|---|---|
| Sodium | 7.5 | 58.9 | mg/L |
| Chloride | 13.0 | 111 | mg/L |
| Total Dissolved Solids (TDS) | 44.0 | 324 | mg/L |
| Sulphate | 2.0 | 16.7 | mg/L |
Hardness & scale
| Parameter | Ongerup | Region avg | Unit |
|---|---|---|---|
| Hardness | 14.0 | 101 | mg/L |
| Alkalinity | 10.0 | 70.2 | mg/L |
| Silica | 1.1 | 8.3 | mg/L |
pH balance
| Parameter | Ongerup | Region avg | Unit |
|---|---|---|---|
| pH | 7.0 | 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.