Calga vs Central Mangrove

Name: Water Quality Comparison: Calga vs Central Mangrove
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Calga, NSW

9.1

Quality Score

Supplied by Central Coast Council

Central Mangrove, NSW

9.1

Quality Score

Supplied by Central Coast Council

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Which suburb has better water?

It's very close! Calga scores 9.1/10 and Central Mangrove scores 9.1/10. Both suburbs have similar water quality based on ADWG compliance data.

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Recommended for this suburb

Chlorine in Calga is 1.19 mg/L — that's high. It's why your tap water smells like a pool.

Chlorine is added on purpose (kills bugs in the pipes), but by the time it reaches your tap it ruins everything you taste. Tea takes on a medicinal edge. Kids turn down water and drink juice or soft drink instead. The usual family fix is bottled water, but a simple carbon filter is the cleaner daily habit. Worse, many filter pitchers go in the fridge and get ignored because they're slow.

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Visual comparison

Calga, NSW

Central Mangrove, NSW

Key metrics comparison

Hardness (mg/L)

Calga

49 Same

Central Mangrove

49 Same

pH Level

Calga

7.6 Normal

Central Mangrove

7.6 Normal

Fluoride (mg/L)

Calga

0.79 Same

Central Mangrove

0.79 Same

Chlorine (mg/L)

Calga

1.19 Same

Central Mangrove

1.19 Same

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Calga	Central Mangrove	Unit	ADWG Guideline
Aluminium	0.04 Good	0.04 Good	mg/L	< 0.2
Colour	1 Good	1 Good	HU	< 15
Copper	0.018 Good	0.018 Good	mg/L	< 2
E. coli	0 Compliant	0 Compliant	MPN/100mL	< 0
Fluoride	0.79 Good	0.79 Good	mg/L	< 1.5
Free Chlorine	1.19 Good	1.19 Good	mg/L	< 5
Hardness	49 Good	49 Good	mg/L CaCO3	< 200
Iron	0.02 Good	0.02 Good	mg/L	< 0.3
Lead	0.0004 Good	0.0004 Good	mg/L	< 0.01
Manganese	0.006 Good	0.006 Good	mg/L	< 0.1
Pfbs	0.001 Measured	0.001 Measured	µg/L	No limit
Pfhxs	0.001 Measured	0.001 Measured	µg/L	No limit
PFOA	0.001 Good	0.001 Good	µg/L	< 0.56
PFOS	0.001 Good	0.001 Good	µg/L	< 0.07
Pfos Pfhxs	0.002 Measured	0.002 Measured	µg/L	No limit
pH	7.6 Normal	7.6 Normal	pH units	6.5 – 8.5
Total Chlorine	1.4 Good	1.4 Good	mg/L	< 5
Total Dissolved Solids	46 Good	46 Good	mg/L	< 600
Trihalomethanes	115 Exceeds	115 Exceeds	mg/L	< 0.25
Turbidity	0.56 Good	0.56 Good	NTU	< 5
Zinc	0.01 Measured	0.01 Measured	mg/L	No limit

Explore further

Calga

Central Mangrove

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