Cooyerdoo vs Secret Rocks

Name: Water Quality Comparison: Cooyerdoo vs Secret Rocks
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Secret Rocks, SA

8.7

Quality Score

Supplied by SA Water

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Which suburb has better water?

It's very close! Cooyerdoo scores 9.0/10 and Secret Rocks scores 8.7/10. Both suburbs have similar water quality based on ADWG compliance data.

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Recommended for this suburb

Secret Rocks's tap water is 'very hard' at 275 mg/L — and scale is building up in your home right now.

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Visual comparison

Cooyerdoo, SA

Secret Rocks, SA

Key metrics comparison

Hardness (mg/L)

Cooyerdoo

77 Lower

Secret Rocks

275 Higher

pH Level

Cooyerdoo

8.7 Outside range

Secret Rocks

0.05 Outside range

Fluoride (mg/L)

Cooyerdoo

0.52 Higher

Secret Rocks

0.5 Lower

Chlorine (mg/L)

Cooyerdoo

0.1 Lower

Secret Rocks

1.1 Higher

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Cooyerdoo	Secret Rocks	Unit	ADWG Guideline
Alkalinity	64 Measured	231 Measured	mg/L	No limit
Aluminium	0.019 Good	0.003 Good	mg/L	< 0.2
Calcium	15.3 Measured	73.1 Measured	mg/L	No limit
Chloride	75 Good	150 Good	mg/L	< 250
Colour	1 Good	1 Good	HU	< 15
Copper	0.0067 Good	0.0094 Good	mg/L	< 2
E. coli	0 Compliant	0 Compliant	cfu/100mL	< 0
Fluoride	0.52 Good	0.5 Good	mg/L	< 1.5
Free Chlorine	0.1 Good	1.1 Good	mg/L	< 5
Hardness	77 Good	275 Exceeds	PPM or mg/L	< 200
Iron	0.0098 Good	0.001 Good	mg/L	< 0.3
Lead	0.0002 Good	0.0004 Good	mg/L	< 0.01
Magnesium	9.49 Measured	22.4 Measured	mg/L	No limit
Manganese	0.0061 Good	0.0001 Good	mg/L	< 0.1
Nitrate	1.089 Good	15 Good	mg/L	< 50
pH	8.7 Outside range	0.05 Outside range	pH units	6.5 – 8.5
Sodium	60.4 Good	92.8 Good	mg/L	< 180
Sulfate	47.8 Good	25.6 Good	mg/L	< 500
Total Chlorine	2.8 Good	1.1 Good	mg/L	< 5
Total Dissolved Solids	275 Good	560 Near limit	mg/L	< 600
Turbidity	0.1 Good	0.1 Good	NTU	< 5

Explore further

Cooyerdoo

Secret Rocks

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.