Roseworthy vs Willaston

Name: Water Quality Comparison: Roseworthy vs Willaston
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Willaston, SA

8.9

Quality Score

Supplied by SA Water

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Which suburb has better water?

It's very close! Roseworthy scores 8.8/10 and Willaston scores 8.9/10. Both suburbs have similar water quality based on ADWG compliance data.

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Recommended for this suburb

Roseworthy's water is hard at 138 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

Roseworthy, SA

Willaston, SA

Key metrics comparison

Hardness (mg/L)

Roseworthy

138 Higher

Willaston

129 Lower

pH Level

Roseworthy

0.05 Outside range

Willaston

0.05 Outside range

Fluoride (mg/L)

Roseworthy

0.6 Same

Willaston

0.6 Same

Chlorine (mg/L)

Roseworthy

0.6 Higher

Willaston

0.4 Lower

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Roseworthy	Willaston	Unit	ADWG Guideline
Alkalinity	65 Measured	66 Measured	mg/L	No limit
Aluminium	0.019 Good	0.029 Good	mg/L	< 0.2
Calcium	27.9 Measured	25.4 Measured	mg/L	No limit
Chloride	127 Good	117 Good	mg/L	< 250
Colour	1 Good	1 Good	HU	< 15
Copper	0.0157 Good	0.0069 Good	mg/L	< 2
E. coli	0 Compliant	0 Compliant	cfu/100mL	< 0
Fluoride	0.6 Good	0.6 Good	mg/L	< 1.5
Free Chlorine	0.6 Good	0.4 Good	mg/L	< 5
Hardness	138 Good	129 Good	PPM or mg/L	< 200
Iron	0.0828 Good	0.0099 Good	mg/L	< 0.3
Lead	0.0005 Good	0.0003 Good	mg/L	< 0.01
Magnesium	16.7 Measured	15.8 Measured	mg/L	No limit
Manganese	0.0041 Good	0.0024 Good	mg/L	< 0.1
Nitrate	0.18 Good	0.22 Good	mg/L	< 50
pH	0.05 Outside range	0.05 Outside range	µg/L	6.5 – 8.5
Sodium	73.7 Good	71.6 Good	mg/L	< 180
Sulfate	59.2 Good	54.7 Good	mg/L	< 500
Total Chlorine	0.7 Good	0.5 Good	mg/L	< 5
Total Dissolved Solids	391 Good	396 Good	mg/L	< 600
Turbidity	0.25 Good	0.1 Good	NTU	< 5

Explore further

Roseworthy

Willaston

Disclaimer: This comparison is for general informational purposes only and does not constitute medical advice or professional guidance. Data is sourced from SA Water. 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.