Tap Water Quality in Nullarbor, SA
Postcode 5690 · Supplied by SA Water via Oak Valley
Quality Score
About Nullarbor
Nullarbor is a suburb of 71 residents in South Australia (postcode 5690). The median age is 38. It falls within the SA Water area. Neighbouring suburbs include Yalata, Oak Valley, Mitchidy Moola, Chundaria.
Most residents own outright (133%), while 0% own their home with a mortgage, while 0% rent. The median household income is $85,748 per year. The top countries of birth for residents are New Zealand (40%).
Tap water in Nullarbor is supplied by SA Water. The suburb receives water via the Oak Valley supply zone.
Water quality summary
Based on 2025 water quality reports, Nullarbor achieves a WaterScore of 9.8 out of 10, rated excellent overall. Water hardness measures 7 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 7.3, which is within the ADWG guideline range of 6.5–8.5. Fluoride levels are very low at 0.1 mg/L, indicating the water is not significantly fluoridated. Total dissolved solids (TDS) measure 25 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.13 NTU, indicating clear water, within the ADWG guideline of 5 NTU. E. coli was not detected in testing, meeting the ADWG standard for microbiological safety.
Compare with nearby suburbs: Yalata , Oak Valley , Mitchidy Moola
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Nullarbor
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
A reliable marella 2.4l fridge water filter jug (maxtra+) suitable for Nullarbor's water profile.
ZeroWater
23-Cup Dispenser (incl. TDS Meter)
4.3 · 27,123 ratings on Amazon
A reliable 23-cup dispenser (incl. tds meter) suitable for Nullarbor's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
A reliable 8.5l stainless steel gravity system suitable for Nullarbor's water profile.
Comparison
How Nullarbor compares
Compared to South Australia and national averages
| Metric | Nullarbor | SA Avg | National Avg |
|---|---|---|---|
| Hardness | 7 mg/L | 119.3 mg/L | 85.1 mg/L |
| pH | 7.3 | 3.2 | 8.4 |
| Fluoride | 0.1 mg/L | 0.5 mg/L | 0.7 mg/L |
| Turbidity | 0.13 NTU | 0.1 NTU | 0.4 NTU |
| TDS | 25 mg/L | 341.5 mg/L | 275.7 mg/L |
Full Results
Detailed water quality data
All values compared against Australian Drinking Water Guidelines (ADWG)
| Parameter | Value | Unit | ADWG Guideline | Status |
|---|---|---|---|---|
| Alkalinity | 12 | mg/L | No limit | Measured |
| Aluminium | 0.002 | mg/L | < 0.2 | Good |
| Calcium | 2.43 | mg/L | No limit | Measured |
| Chloride | 5 | mg/L | < 250 | Good |
| Colour | 1 | HU | < 15 | Good |
| Copper | 0.4811 | mg/L | < 2 | Good |
| E. coli | 0 | MPN/100mL | < 0 | Compliant |
| Fluoride | 0.1 | mg/L | < 1.5 | Good |
| Hardness | 7 | PPM or mg/L | < 200 | Good |
| Iron | 0.0043 | mg/L | < 0.3 | Good |
| Lead | 0.0025 | mg/L | < 0.01 | Good |
| Magnesium | 0.29 | mg/L | No limit | Measured |
| Manganese | 0.0027 | mg/L | < 0.1 | Good |
| Nitrate | 3.57 | mg/L | < 50 | Good |
| pH | 7.3 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 3.3 | mg/L | < 180 | Good |
| Sulfate | 1 | mg/L | < 500 | Good |
| Total Dissolved Solids | 25 | mg/L | < 600 | Good |
| Turbidity | 0.13 | NTU | < 5 | Good |
Safety
Safety assessment
Based on 19 parameters tested, all results fall within Australian Drinking Water Guidelines. E. coli was not detected, meeting the ADWG standard for microbiological safety.
Based on comparison with Australian Drinking Water Guidelines (ADWG)
Explained
What these numbers mean
Soft (7 mg/L)
Water Hardness
Your water is classified as soft, which means minimal limescale buildup on fixtures and appliances. Soap and shampoo will lather easily, and you should notice no drying effects on skin or hair. Hot water systems and kettles are unlikely to suffer scale-related efficiency losses.
Normal Range
pH Level
pH of 7.3 is within the ideal range of 6.5–8.5. The ADWG recommends pH between 6.5 and 8.5 for drinking water.
Low fluoride
Fluoride
Fluoride at 0.1 mg/L. Below the recommended range.
Data unavailable
Disinfection
Chlorine data is not currently available for Nullarbor.
Learn more about these measurements in our water quality glossary — including Hardness , pH , Fluoride , and ADWG guidelines .
Advice
Practical tips for residents
Soft Water Advantage
Nullarbor's water is soft at 7 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.1 mg/L in Nullarbor. Australian guidelines allow up to 1.5 mg/L. This is added by utilities to support dental health in the community.
Flush After Absence
If your home has been unoccupied for several days, run the kitchen tap for 30 seconds before drinking. This clears stale water that has been sitting in pipes.
Get water quality alerts
We'll email you when Nullarbor's water data is updated.
FAQ
Frequently asked questions
Is tap water safe to drink in Nullarbor?
How hard is the water in Nullarbor?
What water utility supplies Nullarbor?
Does Nullarbor water have fluoride?
What is the water quality score for Nullarbor?
What is the population of Nullarbor?
Supplier
Water utility
- Utility
- SA Water
- Supply Zone
- Oak Valley
- Data Source
- SA Water — water quality performance results november 2025
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 8.8 and 10.0
Utility reports average the grid — not your home
Nullarbor's water meets ADWG standards at the source, but old pipes, roof tanks, and ageing plumbing can add lead, copper or bacteria before the water reaches your tap. These won't show up in your utility report.
Check your own tap before buying a filter or assuming the suburb average matches your home.
Tetra
EasyStrips 6-in-1 Water Test (100 strips)
4.6 · 8,650 ratings on Amazon
Tests 6 parameters in 60 seconds: hardness, chlorine, pH, nitrate, nitrite, alkalinity. Cheapest way to verify your utility data.
Test my tap →Sponsored Amazon link. Check Amazon for current price and availability.
Heavy Metals
Drinking Water Test Kit (Lead, Copper, Iron, Mercury)
4.2 · 250 ratings on Amazon
20 tests. Detects lead, copper, iron, mercury — the things utility reports miss. Mobile-app results, EPA-standard thresholds.
Check metals kit →Sponsored Amazon link. Check Amazon for current price and availability.
Guides for Adelaide and SA
In-depth articles on the water supply that serves Nullarbor
Related
Explore more
Related pages for Nullarbor, SA
Is tap water safe?
Safety assessment
Water hardness
7 mg/L
Best water filter
Filter recommendations
South Australia water quality
State coverage
SA Water
Water utility
Compare with Yalata
Nullarbor vs Yalata
Compare with Oak Valley
Nullarbor vs Oak Valley
Compare with Mitchidy Moola
Nullarbor vs Mitchidy Moola
Disclaimer: The information on this page is for general informational purposes only and does not constitute medical advice, health recommendations, or professional guidance. Water quality data is sourced from SA Water (2025 report) and reflects conditions at the time of utility testing — it may not reflect real-time water quality at your tap. Actual water quality can vary due to local plumbing, seasonal changes, and distance from the treatment plant. For specific health concerns, consult a qualified health professional. For the most current water quality information, contact your local water utility directly. See our Terms of Use.