Home Island Cocos (Keeling) Islands vs Royal Australian Navy Warships

Name: Water Quality Comparison: Home Island Cocos (Keeling) Islands vs Royal Australian Navy Warships
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Home Island Cocos (Keeling) Islands, WA

8.5

Quality Score

Supplied by Water Corporation

Royal Australian Navy Warships, WA

9.6

Quality Score

Supplied by Water Corporation

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Which suburb has better water?

Royal Australian Navy Warships has better water quality with a score of 9.6/10 compared to Home Island Cocos (Keeling) Islands's 8.5/10. Royal Australian Navy Warships has softer water (54 vs 120 mg/L).

Based on ADWG compliance across all measured parameters. Both suburbs receive treated, safe drinking water.

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Recommended for this suburb

TDS in Home Island Cocos (Keeling) Islands is 858 mg/L — above the 600 mg/L guideline. That's a lot of dissolved mineral passing your lips.

TDS is the total of every salt, metal and mineral dissolved in your water. At this level, water tastes flat or mildly salty, kettles descale constantly, and skin/hair feels rougher after a shower. Standard carbon filters won't move this number — they're designed for taste and chlorine, not dissolved solids. This is the one water issue where you genuinely need RO; no other consumer filter gets close.

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Reverse osmosis pushes water through a sub-micron membrane that blocks 90–99% of dissolved solids. The water that comes out the other side reads 50–100 mg/L — drinking-water-plant territory. Installs under the sink, with its own tap above the bench.

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Visual comparison

Home Island Cocos (Keeling) Islands, WA

Royal Australian Navy Warships, WA

Key metrics comparison

Hardness (mg/L)

Home Island Cocos (Keeling) Islands

120 Higher

Royal Australian Navy Warships

54 Lower

pH Level

Home Island Cocos (Keeling) Islands

7.76 Normal

Royal Australian Navy Warships

7.85 Normal

Fluoride (mg/L)

Home Island Cocos (Keeling) Islands

0.78 Higher

Royal Australian Navy Warships

0.1 Lower

Chlorine (mg/L)

Home Island Cocos (Keeling) Islands

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Royal Australian Navy Warships

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Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Home Island Cocos (Keeling) Islands	Royal Australian Navy Warships	Unit	ADWG Guideline
Alkalinity	63.3 Measured	49 Measured	mg/L CaCO3	No limit
Aluminium	0.013 Good	0.008 Good	mg/L	< 0.2
Chloride	400 Exceeds	42 Good	mg/L	< 250
Colour	1 Good	1 Good	HU	< 15
Fluoride	0.78 Good	0.1 Good	mg/L	< 1.5
Hardness	120 Good	54 Good	mg/L CaCO3	< 200
Iron	0.107 Good	0.009 Good	mg/L	< 0.3
Manganese	0.005 Good	0.005 Good	mg/L	< 0.1
Nitrate	2.6 Good	0.44 Good	mg/L	< 50
pH	7.76 Normal	7.85 Normal	pH units	6.5 – 8.5
Sodium	253 Exceeds	21 Good	mg/L	< 180
Sulfate	57 Good	0.15 Good	mg/L	< 500
Total Dissolved Solids	858 Exceeds	157 Good	mg/L	< 600
Trihalomethanes	0.038 Good	0.052 Good	mg/L	< 0.25
Turbidity	0.1 Good	0.1 Good	NTU	< 5

Explore further

Home Island Cocos (Keeling) Islands

Royal Australian Navy Warships

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.