Tap Water Quality in Trigg, WA
Postcode 6029 · Supplied by Water Corporation via West Yokine
Quality Score
About Trigg
Trigg is a suburb of 2,855 residents in Western Australia (postcode 6029). The median age is 43. It falls within the Water Corporation area. Neighbouring suburbs include Karrinyup, North Beach, Carine, Marmion.
Most residents own outright (46%), while 37% own their home with a mortgage, while 11% rent. The median household income is $144,508 per year. The top countries of birth for residents are United Kingdom (36%), South Africa (10%), and New Zealand (7%).
Tap water in Trigg is supplied by Water Corporation. The suburb receives water via the West Yokine supply zone.
Water quality summary
Based on 2024-25 water quality reports, Trigg achieves a WaterScore of 9.0 out of 10, rated excellent overall. Water hardness measures 123 mg/L, classified as hard. Residents may notice limescale buildup on appliances and fixtures. The pH level is 7.44, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.85 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 535 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: Karrinyup , North Beach , Carine
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
123/200 mg/L
23% above Western Australia avg
53% above national avg
Recommended filters for Trigg
Products matched to your water profile
iSpring
RCC7AK 6-Stage Under-Sink RO (with Alkaline Re-min)
4.6 · 13,756 ratings on Amazon
Ideal for Trigg — reduces hardness from 123 mg/L.
YARNA
Capacitive Electronic Water Descaler (Whole House)
4 · 538 ratings on Amazon
Ideal for Trigg — helps reduce limescale buildup from hard water (123 mg/L) without removing hardness minerals.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
A reliable 8.5l stainless steel gravity system suitable for Trigg's water profile.
Comparison
How Trigg compares
Compared to Western Australia and national averages
| Metric | Trigg | WA Avg | National Avg |
|---|---|---|---|
| Hardness | 123 mg/L | 99.8 mg/L | 80.3 mg/L |
| pH | 7.44 | 7.9 | 7.8 |
| Fluoride | 0.85 mg/L | 0.7 mg/L | 0.7 mg/L |
| Turbidity | 0.1 NTU | 0.2 NTU | 0.4 NTU |
| TDS | 535 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 | 86 | mg/L CaCO3 | No limit | Measured |
| Aluminium | 0.008 | mg/L | < 0.2 | Good |
| Chloride | 196 | mg/L | < 250 | Good |
| Hardness | 123 | mg/L CaCO3 | < 200 | Good |
| Iron | 0.019 | mg/L | < 0.3 | Good |
| Manganese | 0.002 | mg/L | < 0.1 | Good |
| pH | 7.44 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 115 | mg/L | < 180 | Good |
| Sulfate | 48 | mg/L | < 500 | Good |
| Total Dissolved Solids | 535 | mg/L | < 600 | Near limit |
| Colour | 1 | HU | < 15 | Good |
| Turbidity | 0.1 | NTU | < 5 | Good |
| Fluoride | 0.85 | mg/L | < 1.5 | Good |
| Nitrate | 1.8 | mg/L | < 50 | Good |
| Trihalomethanes | 0.139 | 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
Hard (123 mg/L)
Water Hardness
Your water is classified as hard. Expect noticeable limescale on heating elements, showerheads, and taps. Soap and shampoo may not lather as freely, requiring more product. Some residents report drier skin or hair. Periodic descaling of kettles and hot water systems is recommended to maintain efficiency.
Normal Range
pH Level
pH of 7.44 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 0.85 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 Trigg.
Learn more about these measurements in our water quality glossary — including Hardness , pH , Fluoride , and ADWG guidelines .
Advice
Practical tips for residents
Watch for Limescale
Trigg has hard water at 123 mg/L. Wipe taps and showerheads periodically with vinegar to prevent limescale buildup on fixtures.
Fluoride in Your Water
Fluoride measures 0.85 mg/L in Trigg. 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 535 mg/L. A reverse osmosis filter can reduce dissolved minerals if you prefer a cleaner taste in drinking water.
Get water quality alerts
We'll email you when Trigg's water data is updated.
FAQ
Frequently asked questions
Is tap water safe to drink in Trigg?
How hard is the water in Trigg?
What water utility supplies Trigg?
Does Trigg water have fluoride?
What is the water quality score for Trigg?
What is the population of Trigg?
Supplier
Water utility
- Utility
- Water Corporation
- Supply Zone
- West Yokine
- 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 8.0 and 10.0
Utility reports average the grid — not your home
Trigg'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 Trigg
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 Trigg, WA [Data set]. Compiled from Water Corporation data (2024-25 annual report). https://waterscore.com.au/water-quality/trigg-wa/
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Related
Explore more
Related pages for Trigg, WA
Is tap water safe?
Safety assessment
Water hardness
123 mg/L
Best water filter
Filter recommendations
Western Australia water quality
State coverage
Water Corporation
Water utility
Compare with Karrinyup
Trigg vs Karrinyup
Compare with Marmion
Trigg vs Marmion
Compare with Sorrento
Trigg vs Sorrento
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.