Water hardness & quality in Joondalup, WA
6027 · Perth Region · Reporting period 2023-2024
Joondalup 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, Wanneroo, about 4 km away.
Water hardness
HardLikely124mg/L
Noticeable scale on kettles, taps and hot water systems. Regular descaling helps, and some homes add a softener.
Estimated from Wanneroo (124 mg/L, 4 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 Joondalup
Wanneroo
Its water is much closer to neutral pH and much clearer, though it runs harder and less pure, versus the Perth Region.
Purity
By-products & nitrate
Less pure than 72% of Perth Region supplies
Clarity
Turbidity, colour, metals
Clearer than 92% of Perth Region supplies
Taste
Sodium, chloride, TDS
About average for the Perth Region
Hardness
Calcium & magnesium
Harder than 83% of Perth Region supplies
pH balance
How close to neutral (7.0)
More neutral than 93% of Perth Region supplies
Other monitored supplies near Joondalup
Water quality in suburbs near Joondalup
Common questions
Is the tap water in Joondalup tested?
Joondalup isn't sampled as an individual locality. Its water is supplied through the Water Corporation network; the closest monitored supply point is Wanneroo, about 4 km away.
How hard is the water in Joondalup?
Joondalup isn't sampled directly. Its nearest monitored supply, Wanneroo (about 4 km away), averages 124 mg/L of hardness — hard. Noticeable scale on kettles, taps and hot water systems. Regular descaling helps, and some homes add a softener.
Is the tap water in Joondalup safe to drink?
Joondalup isn't tested on its own, but its nearest monitored supply, Wanneroo, met every NHMRC Australian Drinking Water Guidelines health limit with published data in 2023-2024.
How to read this
Joondalup 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).