Katoomba vs Romsey

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

Side-by-side tap water quality comparison

Katoomba, NSW

9.7

Quality Score

Supplied by Sydney Water

Romsey, VIC

9.7

Quality Score

Supplied by Greater Western Water

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Which suburb has better water?

It's very close! Katoomba scores 9.7/10 and Romsey scores 9.7/10. Both suburbs have similar water quality based on ADWG compliance data.

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Recommended for this suburb

Fluoride in Katoomba is 1.04 mg/L — above the 1.0 mg/L threshold. If you want it out, a carbon pitcher won't do it.

This is the fluoride mistake almost every family makes: they buy a Brita or a basic tap filter, assume it's handling fluoride, and it isn't. Activated carbon doesn't touch fluoride ions. Neither does boiling — that actually concentrates it. Reverse osmosis (85–95% removal) and activated alumina are the only two consumer technologies that measurably reduce fluoride at the tap.

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RCC7AK 6-Stage Under-Sink RO (with Alkaline Re-min)

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A 6-stage RO system drops fluoride from 1.04 mg/L down to near-zero, and handles chlorine, lead and dissolved solids at the same time. Under-sink mount, its own tap on the bench.

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Visual comparison

Katoomba, NSW

Romsey, VIC

Key metrics comparison

Hardness (mg/L)

Katoomba

38.1 Lower

Romsey

52 Higher

pH Level

Katoomba

7.7 Normal

Romsey

7.5 Normal

Fluoride (mg/L)

Katoomba

1.04 Higher

Romsey

0.06 Lower

Chlorine (mg/L)

Katoomba

1.06 Higher

Romsey

0.32 Lower

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Katoomba	Romsey	Unit	ADWG Guideline
Alkalinity	—	37 Measured	mg/L CaCO3	No limit
Aluminium	0.017 Good	0.01 Good	mg/L	< 0.2
Ammonia	0.001 Measured	—	mg/L	No limit
Chloride	0.004 Good	—	mg/L	< 250
Colour	2 Good	3 Good	HU	< 15
Copper	0.014 Good	—	mg/L	< 2
Dissolved Oxygen	87.9 Measured	—	% saturation	No limit
E. coli	0 Compliant	0 Compliant	orgs/100 mL	< 0
Electrical Conductivity	—	257 Measured		No limit
Fluoride	1.04 Good	0.06 Good	mg/L	< 1.5
Free Chlorine	1.06 Good	0.32 Good	mg/L	< 5
Hardness	38.1 Good	52 Good	mg/L	< 200
Iron	0.016 Good	0.01 Good	mg/L	< 0.3
Manganese	0.0031 Good	0.003 Good	mg/L	< 0.1
Monochloramine	0.07 Good	—	mg/L	< 3
Ndma	0.0001 Measured	—	mg/L	No limit
Nitrate	—	0.11 Good	mg/L	< 50
PFOA	0.0001 Good	—	µg/L	< 0.2
PFOS + PFHxS	0.0026 Good	—	µg/L	PFOS < 0.008, PFHxS < 0.03
pH	7.7 Normal	7.5 Normal	pH units	6.5 – 8.5
Sodium	—	24.3 Good	mg/L	< 180
Sulfate	0.9 Good	—	mg/L	< 500
Temperature	16.1 Measured	—	degrees C	No limit
Total Chlorine	—	1 Good	mg/L	< 5
Total Dissolved Solids	92.5 Good	—	mg/L	< 600
Trihalomethanes	0.03 Good	0.039 Good	mg/L	< 0.25
Turbidity	0.17 Good	0.1 Good	NTU	< 5
Zinc	0.005 Measured	—	mg/L	No limit

Explore further

Katoomba

Romsey

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