Water hardness & quality in Stirling, WA
6021 · Perth Region · Reporting period 2023-2024
Stirling isn't sampled as its own locality. Its drinking water is supplied through the Water Corporation network, so the closest picture of what comes out of the tap is the two monitored supply points it sits between — Mount Yokine and Mount Hawthorn.
Water hardness
Moderately hardLikely103mg/L
Nearby supplies: 103–110 mg/L
Some scale builds up over time on kettles and shower heads. Most homes don't need a softener.
Estimated from Mount Yokine (103 mg/L, 4 km) and Mount Hawthorn (110 mg/L, 5 km).
ADWG aesthetic guideline: 200 mg/L. Hardness affects scale and taste, not safety.
Compare water hardness across WA →Nearest monitored supply · 4 km from Stirling
Mount Yokine
Its water runs much saltier and harder than most of the Perth Region.
Purity
By-products & nitrate
Less pure than 68% of Perth Region supplies
Clarity
Turbidity, colour, metals
About average for the Perth Region
Taste
Sodium, chloride, TDS
Saltier than 88% of Perth Region supplies
Hardness
Calcium & magnesium
Harder than 77% of Perth Region supplies
pH balance
How close to neutral (7.0)
About average for the Perth Region
Nearest monitored supply · 5 km from Stirling
Mount Hawthorn
Its water runs much saltier and harder than most of the Perth Region.
Purity
By-products & nitrate
About average for the Perth Region
Clarity
Turbidity, colour, metals
About average for the Perth Region
Taste
Sodium, chloride, TDS
Saltier than 91% of Perth Region supplies
Hardness
Calcium & magnesium
Harder than 77% of Perth Region supplies
pH balance
How close to neutral (7.0)
About average for the Perth Region
Other monitored supplies near Stirling
Water quality in suburbs near Stirling
Common questions
Is the tap water in Stirling tested?
Stirling isn't sampled as an individual locality. Its water is supplied through the Water Corporation network; the closest monitored supply point is Mount Yokine, about 4 km away.
How hard is the water in Stirling?
Stirling isn't sampled directly. Its nearest monitored supply, Mount Yokine (about 4 km away), averages 103 mg/L of hardness — moderately hard. Other supplies within a few kilometres read 103–110 mg/L, so your street may differ. Some scale builds up over time on kettles and shower heads. Most homes don't need a softener.
Is the tap water in Stirling safe to drink?
Stirling isn't tested on its own, but its nearest monitored supply, Mount Yokine, met every NHMRC Australian Drinking Water Guidelines health limit with published data in 2023-2024.
How to read this
Stirling doesn't have its own published sampling point. The supplies shown here are the closest monitored locations by distance — a useful proxy, but not a guarantee of the exact source feeding your street, since much of Perth draws on the blended Integrated Water Supply Scheme. For the authoritative picture, check with Water Corporation.
Readings come from the Water Corporation of WA Drinking Water Quality Annual Report 2023-2024, ranked within each supply's region. Suburb locations: GeoNames (CC BY 4.0).