Water hardness & quality in Darch, WA
6065 · Perth Region · Reporting period 2023-2024
Darch 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 — Whitfords and Mirrabooka.
Water hardness
HardLikely120mg/L
Nearby supplies: 120–128 mg/L
Noticeable scale on kettles, taps and hot water systems. Regular descaling helps, and some homes add a softener.
Estimated from Whitfords (120 mg/L, 6 km) and Mirrabooka (128 mg/L, 7 km).
ADWG aesthetic guideline: 200 mg/L. Hardness affects scale and taste, not safety.
Compare water hardness across WA →Nearest monitored supply · 6 km from Darch
Whitfords
Its water is closer to neutral pH and clearer, though it runs harder and less pure, versus the Perth Region.
Purity
By-products & nitrate
Less pure than 70% of Perth Region supplies
Clarity
Turbidity, colour, metals
Clearer than 71% of Perth Region supplies
Taste
Sodium, chloride, TDS
About average for the Perth Region
Hardness
Calcium & magnesium
Harder than 78% of Perth Region supplies
pH balance
How close to neutral (7.0)
More neutral than 74% of Perth Region supplies
Nearest monitored supply · 7 km from Darch
Mirrabooka
Its water runs saltier and further from neutral pH 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 84% of Perth Region supplies
Hardness
Calcium & magnesium
About average for the Perth Region
pH balance
How close to neutral (7.0)
Further from neutral than 70% of Perth Region supplies
Other monitored supplies near Darch
Water quality in suburbs near Darch
Common questions
Is the tap water in Darch tested?
Darch isn't sampled as an individual locality. Its water is supplied through the Water Corporation network; the closest monitored supply point is Whitfords, about 6 km away.
How hard is the water in Darch?
Darch isn't sampled directly. Its nearest monitored supply, Whitfords (about 6 km away), averages 120 mg/L of hardness — hard. Other supplies within a few kilometres read 120–128 mg/L, so your street may differ. Noticeable scale on kettles, taps and hot water systems. Regular descaling helps, and some homes add a softener.
Is the tap water in Darch safe to drink?
Darch isn't tested on its own, but its nearest monitored supply, Whitfords, met every NHMRC Australian Drinking Water Guidelines health limit with published data in 2023-2024.
How to read this
Darch 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).