Tap Water Quality in Rose Bay North, NSW
Postcode 2030 · Supplied by Sydney Water via Ryde
Quality Score
About Rose Bay North
Rose Bay North is a suburb in New South Wales, Australia (postcode 2030). It falls within the Sydney Water area. Neighbouring suburbs include Diamond Bay, Dover Heights, Hmas Watson, Vaucluse.
Tap water in Rose Bay North is supplied by Sydney Water. The suburb receives water via the Ryde supply zone.
Water quality summary
Based on 2024-25 water quality reports, Rose Bay North achieves a WaterScore of 9.5 out of 10, rated excellent overall. Water hardness measures 49.3 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 7.8, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 1.01 mg/L, within the recommended range of 0.6–1.1 mg/L for dental health, well under the ADWG maximum of 1.5 mg/L. Chlorine, used for disinfection, measures 0.04 mg/L — well within the ADWG guideline of 5 mg/L. Total dissolved solids (TDS) measure 137 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: Diamond Bay , Dover Heights , Hmas Watson
Recommended filters for Rose Bay North
Products matched to your water profile
ZeroWater
2.8L 5-Stage Jug (IAPMO Certified: PFOA/PFOS + Lead)
4.2 · 5,315 ratings on Amazon
Ideal for Rose Bay North — removes fluoride (currently 1.01 mg/L).
iSpring
RCC7AK 6-Stage Under-Sink RO (with Alkaline Re-min)
4.6 · 13,756 ratings on Amazon
Ideal for Rose Bay North — removes fluoride (currently 1.01 mg/L).
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
A reliable 8.5l stainless steel gravity system suitable for Rose Bay North's water profile.
Comparison
How Rose Bay North compares
Compared to New South Wales and national averages
| Metric | Rose Bay North | NSW Avg | National Avg |
|---|---|---|---|
| Hardness | 49.3 mg/L | 45.9 mg/L | 85.3 mg/L |
| pH | 7.8 | 7.7 | 7.8 |
| Fluoride | 1.01 mg/L | 1 mg/L | 0.7 mg/L |
| Chlorine | 0.04 mg/L | — | — |
| Turbidity | 0.13 NTU | 0.2 NTU | 0.4 NTU |
| TDS | 137 mg/L | 116.3 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 |
|---|---|---|---|---|
| Iron | 0.006 | mg/L | < 0.3 | Good |
| Aluminium | 0.013 | mg/L | < 0.2 | Good |
| Manganese | 0.0014 | mg/L | < 0.1 | Good |
| Copper | 0.035 | mg/L | < 2 | Good |
| Zinc | 0.009 | mg/L | No limit | Measured |
| Ammonia | 0.177 | mg/L | No limit | Measured |
| Turbidity | 0.13 | NTU | < 5 | Good |
| Colour | 4 | HU | < 15 | Good |
| Dissolved Oxygen | 107.2 | % saturation | No limit | Measured |
| Total Dissolved Solids | 137 | mg/L | < 600 | Good |
| Sulfate | 8.8 | mg/L | < 500 | Good |
| Hardness | 49.3 | mg/L | < 200 | Good |
| pH | 7.8 | pH units | 6.5 – 8.5 | Normal |
| Temperature | 19.5 | degrees C | No limit | Measured |
| E. coli | 0 | orgs/100 mL | < 0 | Compliant |
| Free Chlorine | 0.04 | mg/L | < 5 | Good |
| Monochloramine | 1.74 | mg/L | < 3 | Good |
| Fluoride | 1.01 | mg/L | < 1.5 | Good |
| Trihalomethanes | 0.09 | mg/L | < 0.25 | Good |
| Ndma | 0.0001 | mg/L | No limit | Measured |
| Chloride | 0.004 | mg/L | < 250 | Good |
| PFOS + PFHxS | 0.0014 | µg/L | PFOS < 0.008, PFHxS < 0.03 | Good |
| PFOA | 0.0002 | µg/L | < 0.2 | Good |
Safety
Safety assessment
Based on 23 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 (49.3 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 7.8 is within the ideal range of 6.5–8.5. The ADWG recommends pH between 6.5 and 8.5 for drinking water.
Fluoridated
Fluoride
Fluoride at 1.01 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine
Disinfection
Chlorine measured at 0.04 mg/L, well within the ADWG guideline of 5 mg/L. Used for disinfection to keep water safe. May affect taste slightly — refrigerating water or using a carbon filter can help.
Learn more about these measurements in our water quality glossary — including Hardness , pH , Fluoride , and ADWG guidelines .
Advice
Practical tips for residents
Chlorine Levels Are Low
Chlorine in Rose Bay North measures 0.04 mg/L, which is low. Filling a jug and letting it stand for 30 minutes will reduce any residual taste.
Soft Water Advantage
Rose Bay North's water is soft at 49.3 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 1.01 mg/L in Rose Bay North. Australian guidelines allow up to 1.5 mg/L. This is added by utilities to support dental health in the community.
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FAQ
Frequently asked questions
Is tap water safe to drink in Rose Bay North?
How hard is the water in Rose Bay North?
What water utility supplies Rose Bay North?
Does Rose Bay North water have fluoride?
What is the water quality score for Rose Bay North?
Supplier
Water utility
- Utility
- Sydney Water
- Supply Zone
- Ryde
- Data Source
- Sydney Water — quarterly ryde q2 202425, quarterly ryde q3 202425, quarterly ryde q4 202425
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 8.5 and 10.0
Utility reports average the grid — not your home
Rose Bay North'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 Sydney
In-depth articles on the water supply that serves Rose Bay North
Cite
Cite this page
Free to quote and reuse with a credit to WaterScore and a link to this page. Journalists and researchers can find key figures and contacts on our press and data page.
WaterScore. (2026). Tap water quality in Rose Bay North, NSW [Data set]. Compiled from Sydney Water data (2024-25 annual report). https://waterscore.com.au/water-quality/rose-bay-north-nsw/
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Related
Explore more
Related pages for Rose Bay North, NSW
Is tap water safe?
Safety assessment
Water hardness
49.3 mg/L
Best water filter
Filter recommendations
New South Wales water quality
State coverage
Sydney Water
Water utility
Compare with Diamond Bay
Rose Bay North vs Diamond Bay
Compare with Dover Heights
Rose Bay North vs Dover Heights
Compare with Hmas Watson
Rose Bay North vs Hmas Watson
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 Sydney Water (2024-25 annual 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.