Tap Water Quality in Macleay Island, QLD
Postcode 4184 · Supplied by Seqwater via Redland
Quality Score
About Macleay Island
Macleay Island is a suburb of 3,193 residents in Queensland (postcode 4184). The median age is 62. It falls within the Seqwater area. Neighbouring suburbs include Lamb Island, Karragarra Island, Coochiemudlo Island, Victoria Point.
Most residents own outright (51%), while 23% own their home with a mortgage, while 22% rent. The median household income is $39,260 per year. The top countries of birth for residents are United Kingdom (35%), New Zealand (28%), and Germany (4%).
Tap water in Macleay Island is supplied by Seqwater. The suburb receives water via the Redland supply zone.
Water quality summary
Based on recent water quality reports, Macleay Island achieves a WaterScore of 8.3 out of 10, rated excellent overall. Water hardness measures 85.2 mg/L, classified as moderately hard. This may cause light mineral deposits on fixtures over time. The pH level is 27.9, which is outside the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.83 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 1.1 mg/L — well within the ADWG guideline of 5 mg/L. Some residents may notice a slight taste, which can be reduced by refrigerating water or using a carbon filter. Turbidity is 0.4 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: Lamb Island , Karragarra Island , Coochiemudlo Island
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Macleay Island
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
Ideal for Macleay Island — removes chlorine taste and odour.
ZeroWater
2.8L 5-Stage Jug (PFAS + Fluoride + Lead, IAPMO Certified)
4.2 · 5,315 ratings on Amazon
A reliable 2.8l 5-stage jug (pfas + fluoride + lead, iapmo certified) suitable for Macleay Island's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Macleay Island — removes chlorine taste and odour.
Comparison
How Macleay Island compares
Compared to Queensland and national averages
| Metric | Macleay Island | QLD Avg | National Avg |
|---|---|---|---|
| Hardness | 85.2 mg/L | 74.8 mg/L | 85.1 mg/L |
| pH | 27.9 | 23.6 | 8.4 |
| Fluoride | 0.83 mg/L | 0.8 mg/L | 0.7 mg/L |
| Chlorine | 1.1 mg/L | — | — |
| Turbidity | 0.4 NTU | 0.3 NTU | 0.4 NTU |
| TDS | — | — | 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 |
|---|---|---|---|---|
| Fluoride | 0.83 | mg/L | < 1.5 | Good |
| Free Chlorine | 1.1 | mg/L | < 5 | Good |
| Monochloramine | 2.2 | mg/L | < 3 | Good |
| Total Chlorine | 2.2 | mg/L | < 5 | Good |
| Chlorate | 0.071 | mg/L | No limit | Measured |
| Cadmium | 0.0001 | mg/L | No limit | Measured |
| Chromium | 0.001 | mg/L | No limit | Measured |
| Copper | 0.001 | mg/L | < 2 | Good |
| Lead | 0.001 | mg/L | < 0.01 | Good |
| Manganese | 0.003 | mg/L | < 0.1 | Good |
| Nickel | 0.001 | mg/L | No limit | Measured |
| E. coli | 0 | CFU/100mL | < 0 | Compliant |
| Nitrate | 0.072 | mg/L | < 50 | Good |
| Nitrite | 0.031 | mg/L | No limit | Measured |
| Trihalomethanes | 90.9 | µg/L | < 0.25 | Exceeds |
| Chloride | 61.2 | mg/L | < 250 | Good |
| Hardness | 85.2 | mg/L | < 200 | Good |
| Sodium | 32 | mg/L | < 180 | Good |
| pH | 27.9 | mg/L | 6.5 – 8.5 | Outside range |
| Aluminium | 0.042 | mg/L | < 0.2 | Good |
| Iron | 0.01 | mg/L | < 0.3 | Good |
| Zinc | 0.005 | mg/L | No limit | Measured |
| Colour | 1.2 | HU | < 15 | Good |
| Turbidity | 0.4 | NTU | < 5 | Good |
| Calcium | 19.8 | mg/L | No limit | Measured |
| Magnesium | 8.4 | mg/L | No limit | Measured |
| Alkalinity | 68.2 | mg/L | No limit | Measured |
| Conductivity | 421.1 | µS/cm | No limit | Measured |
| Temperature | 27.7 | °C | No limit | Measured |
| Ndma | 0.003 | µg/L | No limit | Measured |
Safety
Safety assessment
Of 30 parameters tested, most fall within Australian Drinking Water Guidelines with 2 exceptions: Trihalomethanes at 90.9 µg/L and pH at 27.9 mg/L. 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
Moderately hard (85.2 mg/L)
Water Hardness
Your water is moderately hard. You may notice light limescale deposits on kettle elements and taps over time. Soap lathers reasonably well, though slightly more product may be needed. Skin and hair are generally unaffected, and appliance lifespan should not be significantly reduced at this level.
Outside Range
pH Level
pH of 27.9 is outside 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 0.83 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine
Disinfection
Chlorine measured at 1.1 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
Reduce Chlorine Taste
Macleay Island's chlorine level is 1.1 mg/L. An activated carbon jug filter or benchtop unit can noticeably reduce chlorine taste and odour from tap water.
Soft Water Advantage
Macleay Island's water is moderately hard at 85.2 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.83 mg/L in Macleay Island. Australian guidelines allow up to 1.5 mg/L. This is added by utilities to support dental health in the community.
Alkaline Water
pH measures 27.9 in Macleay Island, which is above the ADWG guideline range. This may cause a slightly bitter taste but is generally not a practical concern.
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FAQ
Frequently asked questions
Is tap water safe to drink in Macleay Island?
How hard is the water in Macleay Island?
What water utility supplies Macleay Island?
Does Macleay Island water have fluoride?
What is the water quality score for Macleay Island?
What is the population of Macleay Island?
Supplier
Water utility
- Utility
- Seqwater
- Supply Zone
- Redland
- Data Source
- Seqwater — Redland
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 7.3 and 9.3
Utility reports average the grid — not your home
Macleay Island'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 Brisbane and South East Queensland
In-depth articles on the water supply that serves Macleay Island
Related
Explore more
Related pages for Macleay Island, QLD
Is tap water safe?
Safety assessment
Water hardness
85.2 mg/L
Best water filter
Filter recommendations
Queensland water quality
State coverage
Seqwater
Water utility
Compare with Lamb Island
Macleay Island vs Lamb Island
Compare with Karragarra Island
Macleay Island vs Karragarra Island
Compare with Coochiemudlo Island
Macleay Island vs Coochiemudlo Island
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 Seqwater (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.