Water hardness & quality in Cottesloe, WA
6011 · Perth Region · Reporting period 2023-2024
Cottesloe 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 its nearest monitored supply point, Buckland Hill, about 2 km away.
Water hardness
Moderately hardLikely63mg/L
Some scale builds up over time on kettles and shower heads. Most homes don't need a softener.
Estimated from Buckland Hill (63 mg/L, 2 km).
ADWG aesthetic guideline: 200 mg/L. Hardness affects scale and taste, not safety.
Compare water hardness across WA →Nearest monitored supply · 2 km from Cottesloe
Buckland Hill
Its water is clearer and purer than most of the Perth Region.
Purity
By-products & nitrate
Purer than 69% of Perth Region supplies
Clarity
Turbidity, colour, metals
Clearer than 79% of Perth Region supplies
Taste
Sodium, chloride, TDS
About average for the Perth Region
Hardness
Calcium & magnesium
About average for the Perth Region
pH balance
How close to neutral (7.0)
About average for the Perth Region
Other monitored supplies near Cottesloe
Water quality in suburbs near Cottesloe
Common questions
Is the tap water in Cottesloe tested?
Cottesloe isn't sampled as an individual locality. Its water is supplied through the Water Corporation network; the closest monitored supply point is Buckland Hill, about 2 km away.
How hard is the water in Cottesloe?
Cottesloe isn't sampled directly. Its nearest monitored supply, Buckland Hill (about 2 km away), averages 63 mg/L of hardness — moderately hard. Some scale builds up over time on kettles and shower heads. Most homes don't need a softener.
Is the tap water in Cottesloe safe to drink?
Cottesloe isn't tested on its own, but its nearest monitored supply, Buckland Hill, met every NHMRC Australian Drinking Water Guidelines health limit with published data in 2023-2024.
How to read this
Cottesloe 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).