Hewett vs Roseworthy

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

Side-by-side tap water quality comparison

Roseworthy, SA

8.8

Quality Score

Supplied by SA Water

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Which suburb has better water?

It's very close! Hewett scores 8.9/10 and Roseworthy scores 8.8/10. 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

Hewett, SA

Roseworthy, SA

Key metrics comparison

Hardness (mg/L)

Hewett

129 Lower

Roseworthy

138 Higher

pH Level

Hewett

0.05 Outside range

Roseworthy

0.05 Outside range

Fluoride (mg/L)

Hewett

0.6 Same

Roseworthy

0.6 Same

Chlorine (mg/L)

Hewett

0.4 Lower

Roseworthy

0.6 Higher

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

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

Explore further

Hewett

Roseworthy

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.