Tap Water Quality in Marradong, WA
Postcode 6390 · Supplied by Water Corporation via South West
Quality Score
About Marradong
Marradong is a suburb of 58 residents in Western Australia (postcode 6390). The median age is 42. It falls within the Water Corporation area. Neighbouring suburbs include Bannister, Boddington, Crossman, Lower Hotham.
Most residents own outright (45%), while 25% rent, while 0% own their home with a mortgage. The median household income is $112,632 per year.
Tap water in Marradong is supplied by Water Corporation. The suburb receives water via the South West supply zone.
Water quality summary
Based on recent water quality reports, Marradong achieves a WaterScore of 9.5 out of 10, rated excellent overall. Water hardness measures 49 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 8.1, which is within 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. Total dissolved solids (TDS) measure 143 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.1 NTU, indicating clear water, within the ADWG guideline of 5 NTU.
Compare with nearby suburbs: Bannister , Boddington , Crossman
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Marradong
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 Marradong'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 Marradong'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 Marradong's water profile.
Comparison
How Marradong compares
Compared to Western Australia and national averages
| Metric | Marradong | WA Avg | National Avg |
|---|---|---|---|
| Hardness | 49 mg/L | 122.1 mg/L | 85.1 mg/L |
| pH | 8.1 | 8 | 8.4 |
| Fluoride | 0.83 mg/L | 0.8 mg/L | 0.7 mg/L |
| Turbidity | 0.1 NTU | 0.2 NTU | 0.4 NTU |
| TDS | 143 mg/L | 463.8 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 | 47 | mg/L CaCO3 | No limit | Measured |
| Aluminium | 0.023 | mg/L | < 0.2 | Good |
| Chloride | 40 | mg/L | < 250 | Good |
| Hardness | 49 | mg/L CaCO3 | < 200 | Good |
| Iron | 0.007 | mg/L | < 0.3 | Good |
| Manganese | 0.002 | mg/L | < 0.1 | Good |
| pH | 8.1 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 23 | mg/L | < 180 | Good |
| Sulfate | 2 | mg/L | < 500 | Good |
| Total Dissolved Solids | 143 | mg/L | < 600 | Good |
| Colour | 1 | HU | < 15 | Good |
| Turbidity | 0.1 | NTU | < 5 | Good |
| Fluoride | 0.83 | mg/L | < 1.5 | Good |
| Nitrate | 0.2 | mg/L | < 50 | Good |
| Trihalomethanes | 0.016 | mg/L | < 0.25 | Good |
Safety
Safety assessment
Based on 15 parameters tested, all results fall within Australian Drinking Water Guidelines.
Based on comparison with Australian Drinking Water Guidelines (ADWG)
Explained
What these numbers mean
Soft (49 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 8.1 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 0.83 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Data unavailable
Disinfection
Chlorine data is not currently available for Marradong.
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
Marradong's water is soft at 49 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 Marradong. 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 Marradong's water data is updated.
FAQ
Frequently asked questions
Is tap water safe to drink in Marradong?
How hard is the water in Marradong?
What water utility supplies Marradong?
Does Marradong water have fluoride?
What is the water quality score for Marradong?
What is the population of Marradong?
Supplier
Water utility
- Utility
- Water Corporation
- Supply Zone
- South West
- Data Source
- Water Corporation — WC South West Aesthetic Tables, WC South West Health Tables
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
Marradong'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 Perth and WA
In-depth articles on the water supply that serves Marradong
Related
Explore more
Related pages for Marradong, WA
Is tap water safe?
Safety assessment
Water hardness
49 mg/L
Best water filter
Filter recommendations
Western Australia water quality
State coverage
Water Corporation
Water utility
Compare with Bannister
Marradong vs Bannister
Compare with Boddington
Marradong vs Boddington
Compare with Crossman
Marradong vs Crossman
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 Water Corporation (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.