Tap Water Quality in Mountain Creek, QLD
Postcode 4557 · Supplied by Seqwater via Sunshine Coast
Quality Score
About Mountain Creek
Mountain Creek is a suburb of 11,950 residents in Queensland (postcode 4557). The median age is 37. It falls within the Seqwater area. Neighbouring suburbs include Mooloolaba, Parrearra, Alexandra Headland, Sippy Downs.
Most residents own their home with a mortgage (39%), while 37% rent, while 23% own outright. The median household income is $99,372 per year. The top countries of birth for residents are United Kingdom (30%), New Zealand (23%), and South Africa (9%).
Tap water in Mountain Creek is supplied by Seqwater. The suburb receives water via the Sunshine Coast supply zone.
Water quality summary
Based on recent water quality reports, Mountain Creek achieves a WaterScore of 8.4 out of 10, rated excellent overall. Water hardness measures 52.3 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 20.9, 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 1.6 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: Mooloolaba , Parrearra , Alexandra Headland
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Mountain Creek
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
Ideal for Mountain Creek — removes chlorine taste and odour.
ZeroWater
23-Cup Dispenser (incl. TDS Meter)
4.3 · 27,123 ratings on Amazon
A reliable 23-cup dispenser (incl. tds meter) suitable for Mountain Creek's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Mountain Creek — removes chlorine taste and odour.
Comparison
How Mountain Creek compares
Compared to Queensland and national averages
| Metric | Mountain Creek | QLD Avg | National Avg |
|---|---|---|---|
| Hardness | 52.3 mg/L | 74.8 mg/L | 85.1 mg/L |
| pH | 20.9 | 23.6 | 8.4 |
| Fluoride | 0.83 mg/L | 0.8 mg/L | 0.7 mg/L |
| Chlorine | 1.6 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 | 1.6 | mg/L | < 5 | Good |
| Monochloramine | 3.5 | mg/L | < 3 | Exceeds |
| Total Chlorine | 2.1 | mg/L | < 5 | Good |
| Bromate | 0.005 | mg/L | No limit | Measured |
| Chlorate | 0.085 | mg/L | No limit | Measured |
| Arsenic | 0.0005 | 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 | 0.001 | mg/L | < 0.1 | Good |
| Mercury | 0.0001 | mg/L | No limit | Measured |
| Nickel | 0.001 | mg/L | No limit | Measured |
| E. coli | 0 | CFU/100mL | < 0 | Compliant |
| Nitrate | 0.052 | mg/L | < 50 | Good |
| Nitrite | 0.004 | mg/L | No limit | Measured |
| Trihalomethanes | 34.3 | µg/L | < 0.25 | Exceeds |
| Chloride | 26.6 | mg/L | < 250 | Good |
| Hardness | 52.3 | mg/L | < 200 | Good |
| Sodium | 16.3 | mg/L | < 180 | Good |
| pH | 20.9 | mg/L | 6.5 – 8.5 | Outside range |
| Aluminium | 0.008 | mg/L | < 0.2 | Good |
| Iron | 0.01 | mg/L | < 0.3 | Good |
| Zinc | 0.005 | mg/L | No limit | Measured |
| Colour | 1 | HU | < 15 | Good |
| Turbidity | 0.4 | NTU | < 5 | Good |
| Calcium | 12.6 | mg/L | No limit | Measured |
| Magnesium | 5.25 | mg/L | No limit | Measured |
| Alkalinity | 49 | mg/L | No limit | Measured |
| Conductivity | 235.6 | µS/cm | No limit | Measured |
| Temperature | 26.7 | °C | No limit | Measured |
| Ndma | 0.003 | µg/L | No limit | Measured |
Safety
Safety assessment
Of 33 parameters tested, several exceed Australian Drinking Water Guidelines: Monochloramine (3.5 mg/L), Trihalomethanes (34.3 µg/L), pH (20.9 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
Soft (52.3 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.
Outside Range
pH Level
pH of 20.9 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 1.6 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
Mountain Creek's chlorine level is 1.6 mg/L. An activated carbon jug filter or benchtop unit can noticeably reduce chlorine taste and odour from tap water.
Soft Water Advantage
Mountain Creek's water is soft at 52.3 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 Mountain Creek. 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 20.9 in Mountain Creek, 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 Mountain Creek?
How hard is the water in Mountain Creek?
What water utility supplies Mountain Creek?
Does Mountain Creek water have fluoride?
What is the water quality score for Mountain Creek?
What is the population of Mountain Creek?
Supplier
Water utility
- Utility
- Seqwater
- Supply Zone
- Sunshine Coast
- Data Source
- Seqwater — Sunshine Coast
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 7.4 and 9.4
Utility reports average the grid — not your home
Mountain Creek'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 the Sunshine Coast and Noosa
In-depth articles on the water supply that serves Mountain Creek
Related
Explore more
Related pages for Mountain Creek, QLD
Is tap water safe?
Safety assessment
Water hardness
52.3 mg/L
Best water filter
Filter recommendations
Queensland water quality
State coverage
Seqwater
Water utility
Compare with Mooloolaba
Mountain Creek vs Mooloolaba
Compare with Parrearra
Mountain Creek vs Parrearra
Compare with Alexandra Headland
Mountain Creek vs Alexandra Headland
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.