Sorrento vs Watermans Bay

Name: Water Quality Comparison: Sorrento vs Watermans Bay
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Sorrento, WA

9.2

Quality Score

Supplied by Water Corporation

Watermans Bay, WA

9.0

Quality Score

Supplied by Water Corporation

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Which suburb has better water?

It's very close! Sorrento scores 9.2/10 and Watermans Bay scores 9.0/10. Both suburbs have similar water quality based on ADWG compliance data.

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Recommended for this suburb

Watermans Bay's water is hard at 123 mg/L — you're cleaning scale off things that shouldn't need cleaning.

At this level, you'll see white rings inside the kettle, cloudy spots on glassware, and shampoo that never lathers properly. Over 5–10 years, scale slowly kills heating elements in your hot water system and dishwasher — the damage is invisible until they fail 2–3 years early. Boiling doesn't help; it concentrates the minerals.

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An under-sink reverse-osmosis tap gives you clean, soft drinking water without re-plumbing the whole house. The kettle stops scaling. Tea tastes like tea. No more bottled water runs. Fits on standard 15mm pipework, installs in a Saturday.

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Visual comparison

Sorrento, WA

Watermans Bay, WA

Key metrics comparison

Hardness (mg/L)

Sorrento

113 Lower

Watermans Bay

123 Higher

pH Level

Sorrento

7.55 Normal

Watermans Bay

7.44 Normal

Fluoride (mg/L)

Sorrento

0.81 Lower

Watermans Bay

0.85 Higher

Chlorine (mg/L)

Sorrento

—

Watermans Bay

—

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Sorrento	Watermans Bay	Unit	ADWG Guideline
Alkalinity	80 Measured	86 Measured	mg/L CaCO3	No limit
Aluminium	0.012 Good	0.008 Good	mg/L	< 0.2
Chloride	168 Good	196 Good	mg/L	< 250
Colour	1 Good	1 Good	HU	< 15
Fluoride	0.81 Good	0.85 Good	mg/L	< 1.5
Hardness	113 Good	123 Good	mg/L CaCO3	< 200
Iron	0.018 Good	0.019 Good	mg/L	< 0.3
Manganese	0.004 Good	0.002 Good	mg/L	< 0.1
Nitrate	1.8 Good	1.8 Good	mg/L	< 50
pH	7.55 Normal	7.44 Normal	pH units	6.5 – 8.5
Sodium	96 Good	115 Good	mg/L	< 180
Sulfate	29 Good	48 Good	mg/L	< 500
Total Dissolved Solids	458 Good	535 Near limit	mg/L	< 600
Trihalomethanes	0.107 Good	0.139 Good	mg/L	< 0.25
Turbidity	0.1 Good	0.1 Good	NTU	< 5

Explore further

Sorrento

Watermans Bay

Disclaimer: This comparison is for general informational purposes only and does not constitute medical advice or professional guidance. Data is sourced from Water Corporation. Values shown are based on the most recent published water quality reports and may not reflect real-time conditions at your tap. Water quality can vary due to local plumbing, seasonal changes, and other factors. For specific health concerns, consult a qualified health professional or contact your local water utility. See our Terms of Use.