Water hardness & quality in Piara Waters, WA
6112 · Perth Region · Reporting period 2023-2024
Piara Waters 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 — Thomsons Lake and Armadale & Kelmscott.
Water hardness
Moderately hardLikely86mg/L
Nearby supplies: 77–86 mg/L
Some scale builds up over time on kettles and shower heads. Most homes don't need a softener.
Estimated from Thomsons Lake (86 mg/L, 8 km) and Armadale & Kelmscott (77 mg/L, 10 km).
ADWG aesthetic guideline: 200 mg/L. Hardness affects scale and taste, not safety.
Compare water hardness across WA →Nearest monitored supply · 8 km from Piara Waters
Thomsons Lake
Its water is clearer than most of the Perth Region.
Purity
By-products & nitrate
About average for the Perth Region
Clarity
Turbidity, colour, metals
Clearer than 69% 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
Nearest monitored supply · 10 km from Piara Waters
Armadale & Kelmscott
Its water is softer 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
About average for the Perth Region
Hardness
Calcium & magnesium
Softer than 67% of Perth Region supplies
pH balance
How close to neutral (7.0)
About average for the Perth Region
Other monitored supplies near Piara Waters
Water quality in suburbs near Piara Waters
Common questions
Is the tap water in Piara Waters tested?
Piara Waters isn't sampled as an individual locality. Its water is supplied through the Water Corporation network; the closest monitored supply point is Thomsons Lake, about 8 km away.
How hard is the water in Piara Waters?
Piara Waters isn't sampled directly. Its nearest monitored supply, Thomsons Lake (about 8 km away), averages 86 mg/L of hardness — moderately hard. Other supplies within a few kilometres read 77–86 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 Piara Waters safe to drink?
Piara Waters isn't tested on its own, but its nearest monitored supply, Thomsons Lake, met every NHMRC Australian Drinking Water Guidelines health limit with published data in 2023-2024.
How to read this
Piara Waters 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).