Tap Water Quality in Treeby, WA
Postcode 6164 · Supplied by Water Corporation via Thomsons Lake
Quality Score
About Treeby
Treeby is a suburb of 4,214 residents in Western Australia (postcode 6164). The median age is 32. It falls within the Water Corporation area. Neighbouring suburbs include Piara Waters, Jandakot, Kwinana, Atwell.
Most residents own their home with a mortgage (68%), while 16% rent, while 15% own outright. The median household income is $128,908 per year. The top countries of birth for residents are United Kingdom (15%), India (14%), and Malaysia (9%).
Tap water in Treeby is supplied by Water Corporation. The suburb receives water via the Thomsons Lake supply zone.
Water quality summary
Based on 2024-25 water quality reports, Treeby achieves a WaterScore of 9.1 out of 10, rated excellent overall. Water hardness measures 89 mg/L, classified as moderately hard. This may cause light mineral deposits on fixtures over time. The pH level is 8.01, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.82 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 486 mg/L, considered moderate 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: Piara Waters , Jandakot , Kwinana
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Treeby
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra Pro)
4.8 · 125 ratings on Amazon
A reliable marella 2.4l fridge water filter jug (maxtra pro) suitable for Treeby's water profile.
ZeroWater
2.8L 5-Stage Jug (IAPMO Certified: PFOA/PFOS + Lead)
4.2 · 5,315 ratings on Amazon
A reliable 2.8l 5-stage jug (iapmo certified: pfoa/pfos + lead) suitable for Treeby'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 Treeby's water profile.
Comparison
How Treeby compares
Compared to Western Australia and national averages
| Metric | Treeby | WA Avg | National Avg |
|---|---|---|---|
| Hardness | 89 mg/L | 99.8 mg/L | 80.3 mg/L |
| pH | 8.01 | 7.9 | 7.8 |
| Fluoride | 0.82 mg/L | 0.7 mg/L | 0.7 mg/L |
| Turbidity | 0.1 NTU | 0.2 NTU | 0.4 NTU |
| TDS | 486 mg/L | 434.2 mg/L | 267.4 mg/L |
Full Results
Detailed water quality data
All values compared against Australian Drinking Water Guidelines (ADWG)
| Parameter | Value | Unit | ADWG Guideline | Status |
|---|---|---|---|---|
| Alkalinity | 77 | mg/L CaCO3 | No limit | Measured |
| Aluminium | 0.008 | mg/L | < 0.2 | Good |
| Chloride | 206 | mg/L | < 250 | Near limit |
| Hardness | 89 | mg/L CaCO3 | < 200 | Good |
| Iron | 0.003 | mg/L | < 0.3 | Good |
| Manganese | 0.002 | mg/L | < 0.1 | Good |
| pH | 8.01 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 124 | mg/L | < 180 | Good |
| Sulfate | 23 | mg/L | < 500 | Good |
| Total Dissolved Solids | 486 | mg/L | < 600 | Near limit |
| Colour | 1 | HU | < 15 | Good |
| Turbidity | 0.1 | NTU | < 5 | Good |
| Fluoride | 0.82 | mg/L | < 1.5 | Good |
| Nitrate | 0.2 | mg/L | < 50 | Good |
| Trihalomethanes | 0.054 | 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
Moderately hard (89 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.
Normal Range
pH Level
pH of 8.01 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 0.82 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 Treeby.
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
Treeby's water is moderately hard at 89 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.82 mg/L in Treeby. Australian guidelines allow up to 1.5 mg/L. This is added by utilities to support dental health in the community.
Consider a Filter for TDS
Total dissolved solids measure 486 mg/L. A reverse osmosis filter can reduce dissolved minerals if you prefer a cleaner taste in drinking water.
Get water quality alerts
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FAQ
Frequently asked questions
Is tap water safe to drink in Treeby?
How hard is the water in Treeby?
What water utility supplies Treeby?
Does Treeby water have fluoride?
What is the water quality score for Treeby?
What is the population of Treeby?
Supplier
Water utility
- Utility
- Water Corporation
- Supply Zone
- Thomsons Lake
- Data Source
- Water Corporation — WC Perth Aesthetic Tables 2024 25, WC Perth Health Tables 2024 25
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 8.1 and 10.0
Utility reports average the grid — not your home
Treeby'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 Treeby
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 Treeby, WA [Data set]. Compiled from Water Corporation data (2024-25 annual report). https://waterscore.com.au/water-quality/treeby-wa/
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Related
Explore more
Related pages for Treeby, WA
Is tap water safe?
Safety assessment
Water hardness
89 mg/L
Best water filter
Filter recommendations
Western Australia water quality
State coverage
Water Corporation
Water utility
Compare with Piara Waters
Treeby vs Piara Waters
Compare with Jandakot
Treeby vs Jandakot
Compare with Kwinana
Treeby vs Kwinana
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 (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.