Cornwall vs St Helens

Name: Water Quality Comparison: Cornwall vs St Helens
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

St Helens, TAS

9.6

Quality Score

Supplied by TasWater

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Which suburb has better water?

It's very close! Cornwall scores 9.5/10 and St Helens scores 9.6/10. Both suburbs have similar water quality based on ADWG compliance data.

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Recommended for this suburb

Chlorine in St Helens is 1.132424 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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A BRITA Marella is the opposite: fast (2.4L, fills in under a minute), kid-friendly handle, fridge-door fit, replacement cartridges available everywhere in AU. Chlorine gone, taste clean, no plumber, no faff — this is the default answer for chlorine taste in Australia.

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Visual comparison

Cornwall, TAS

St Helens, TAS

Key metrics comparison

Hardness (mg/L)

Cornwall

142.857143 Higher

St Helens

13.5 Lower

pH Level

Cornwall

7.653387 Normal

St Helens

7.262424 Normal

Fluoride (mg/L)

Cornwall

0.943333 Higher

St Helens

0.86 Lower

Chlorine (mg/L)

Cornwall

0.787581 Lower

St Helens

1.132424 Higher

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Cornwall	St Helens	Unit	ADWG Guideline
Alkalinity	245 Measured	26.666667 Measured	mg/L	No limit
Aluminium	0.01 Good	0.0275 Good	mg/L	< 0.2
Ammonia	0.002286 Measured	0.002 Measured	mg/L	No limit
Antimony	0.001 Measured	0.001 Measured	mg/L	No limit
Arsenic	0.001 Measured	0.001 Measured	mg/L	No limit
Cadmium	0.0002 Measured	0.0002 Measured	mg/L	No limit
Calcium	51.166667 Measured	3.325 Measured	mg/L	No limit
Chloride	20 Good	18.25 Good	mg/L	< 250
Chromium	0.001 Measured	0.001 Measured	mg/L	No limit
Colour	2 Good	2.166667 Good	Pt-Co	< 15
Conductivity	525 Measured	180 Measured	uS/cm	No limit
Copper	0.01125 Good	0.001875 Good	mg/L	< 2
Cyanide	0.005 Measured	0.005 Measured	mg/L	No limit
E. coli	0 Compliant	0 Compliant	MPN/100ml	< 0
Fluoride	0.943333 Good	0.86 Good	mg/L	< 1.5
Free Chlorine	0.787581 Good	1.132424 Good	mg/L	< 5
Hardness	142.857143 Good	13.5 Good	mg/L	< 200
Iron	0.01 Good	0.01125 Good	mg/L	< 0.3
Lead	0.001 Good	0.001125 Good	mg/L	< 0.01
Magnesium	5.033333 Measured	1.45 Measured	mg/L	No limit
Manganese	0.001 Good	0.002625 Good	mg/L	< 0.1
Mercury	0.0001 Measured	0.0001 Measured	mg/L	No limit
Nickel	0.001 Measured	0.001 Measured	mg/L	No limit
Nitrate	0.041571 Good	0.239167 Good	mg/L	< 50
Nitrite	0.002 Measured	0.002 Measured	mg/L	No limit
pH	7.653387 Normal	7.262424 Normal	pH units	6.5 – 8.5
Sodium	57.833333 Good	29.5 Good	mg/L	< 180
Sulfate	13.5 Good	29.916667 Good	mg/L	< 500
Temperature	13.970968 Measured	14.536364 Measured	degrees C	No limit
Total Chlorine	0.849286 Good	1.234286 Good	mg/L	< 5
Total Coliforms	0 Compliant	0 Compliant	MPN/100ml	< 0
Total Dissolved Solids	313.333333 Good	111.25 Good	mg/L	< 600
Trihalomethanes	0.0195 Good	0.03025 Good	mg/L	< 0.25
Turbidity	0.172419 Good	0.333636 Good	NTU	< 5
Zinc	0.004625 Measured	0.002 Measured	mg/L	No limit

Explore further

Cornwall

St Helens

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