Tap Water Quality in Sawyers Valley, WA
Postcode 6074 · Supplied by Water Corporation via Mundaring
Quality Score
About Sawyers Valley
Sawyers Valley is a suburb of 1,001 residents in Western Australia (postcode 6074). The median age is 46. It falls within the Water Corporation area. Neighbouring suburbs include Parkerville, Stoneville, Mahogany Creek, Mundaring.
Most residents own their home with a mortgage (50%), while 42% own outright, while 9% rent. The median household income is $95,940 per year. The top countries of birth for residents are United Kingdom (57%), New Zealand (14%), and United States (4%).
Tap water in Sawyers Valley is supplied by Water Corporation. The suburb receives water via the Mundaring supply zone.
Water quality summary
Based on 2024-25 water quality reports, Sawyers Valley achieves a WaterScore of 8.5 out of 10, rated excellent overall. Water hardness measures 98 mg/L, classified as moderately hard. This may cause light mineral deposits on fixtures over time. The pH level is 8.55, 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. Total dissolved solids (TDS) measure 470 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: Parkerville , Stoneville , Mahogany Creek
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Sawyers Valley
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 Sawyers Valley'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 Sawyers Valley'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 Sawyers Valley's water profile.
Comparison
How Sawyers Valley compares
Compared to Western Australia and national averages
| Metric | Sawyers Valley | WA Avg | National Avg |
|---|---|---|---|
| Hardness | 98 mg/L | 99.8 mg/L | 80.3 mg/L |
| pH | 8.55 | 7.9 | 7.8 |
| Fluoride | 0.83 mg/L | 0.7 mg/L | 0.7 mg/L |
| Turbidity | 0.1 NTU | 0.2 NTU | 0.4 NTU |
| TDS | 470 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 | 67 | mg/L CaCO3 | No limit | Measured |
| Aluminium | 0.019 | mg/L | < 0.2 | Good |
| Chloride | 200 | mg/L | < 250 | Good |
| Hardness | 98 | mg/L CaCO3 | < 200 | Good |
| Iron | 0.006 | mg/L | < 0.3 | Good |
| Manganese | 0.002 | mg/L | < 0.1 | Good |
| pH | 8.55 | pH units | 6.5 – 8.5 | Outside range |
| Sodium | 113 | mg/L | < 180 | Good |
| Sulfate | 30 | mg/L | < 500 | Good |
| Total Dissolved Solids | 470 | mg/L | < 600 | Good |
| Colour | 1 | HU | < 15 | Good |
| Turbidity | 0.1 | NTU | < 5 | Good |
| Fluoride | 0.83 | mg/L | < 1.5 | Good |
| Nitrate | 0.4 | mg/L | < 50 | Good |
| Trihalomethanes | 0.021 | mg/L | < 0.25 | Good |
Safety
Safety assessment
Of 15 parameters tested, most fall within Australian Drinking Water Guidelines with 1 exception: pH at 8.55 pH units.
Based on comparison with Australian Drinking Water Guidelines (ADWG)
Explained
What these numbers mean
Moderately hard (98 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 8.55 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.
Data unavailable
Disinfection
Chlorine data is not currently available for Sawyers Valley.
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
Sawyers Valley's water is moderately hard at 98 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 Sawyers Valley. 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 470 mg/L. A reverse osmosis filter can reduce dissolved minerals if you prefer a cleaner taste in drinking water.
Alkaline Water
pH measures 8.55 in Sawyers Valley, 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 Sawyers Valley?
How hard is the water in Sawyers Valley?
What water utility supplies Sawyers Valley?
Does Sawyers Valley water have fluoride?
What is the water quality score for Sawyers Valley?
What is the population of Sawyers Valley?
Supplier
Water utility
- Utility
- Water Corporation
- Supply Zone
- Mundaring
- 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 7.5 and 9.5
Utility reports average the grid — not your home
Sawyers Valley'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 Sawyers Valley
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 Sawyers Valley, WA [Data set]. Compiled from Water Corporation data (2024-25 annual report). https://waterscore.com.au/water-quality/sawyers-valley-wa/
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Related
Explore more
Related pages for Sawyers Valley, WA
Is tap water safe?
Safety assessment
Water hardness
98 mg/L
Best water filter
Filter recommendations
Western Australia water quality
State coverage
Water Corporation
Water utility
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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.