Castra vs Gunns Plains

Name: Water Quality Comparison: Castra vs Gunns Plains
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Gunns Plains, TAS

9.6

Quality Score

Supplied by TasWater

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Which suburb has better water?

It's very close! Castra scores 9.7/10 and Gunns Plains 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 Gunns Plains is 1.168438 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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Marella 2.4L Fridge Water Filter Jug (Maxtra+)

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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

Castra, TAS

Gunns Plains, TAS

Key metrics comparison

Hardness (mg/L)

Castra

25.909091 Lower

Gunns Plains

57.416667 Higher

pH Level

Castra

7.326645 Normal

Gunns Plains

7.246875 Normal

Fluoride (mg/L)

Castra

0.886667 Higher

Gunns Plains

0.85 Lower

Chlorine (mg/L)

Castra

1.062859 Lower

Gunns Plains

1.168438 Higher

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Castra	Gunns Plains	Unit	ADWG Guideline
Alkalinity	6.30303 Measured	26.428571 Measured	mg/L	No limit
Aluminium	0.025385 Good	0.0325 Good	mg/L	< 0.2
Ammonia	0.002061 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	9.269231 Measured	19.25 Measured	mg/L	No limit
Chloride	7.461538 Good	11 Good	mg/L	< 250
Chromium	0.001 Measured	0.001 Measured	mg/L	No limit
Colour	2.121212 Good	2.083333 Good	Pt-Co	< 15
Conductivity	83.151515 Measured	172.142857 Measured	uS/cm	No limit
Copper	0.004 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	0.886667 Good	0.85 Good	mg/L	< 1.5
Free Chlorine	1.062859 Good	1.168438 Good	mg/L	< 5
Hardness	25.909091 Good	57.416667 Good	mg/L	< 200
Iron	0.013077 Good	0.0125 Good	mg/L	< 0.3
Lead	0.001038 Good	0.001 Good	mg/L	< 0.01
Magnesium	1.015385 Measured	2.15 Measured	mg/L	No limit
Manganese	0.002885 Good	0.001625 Good	mg/L	< 0.1
Mercury	0.000104 Measured	0.0001 Measured	mg/L	No limit
Nickel	0.001 Measured	0.001 Measured	mg/L	No limit
Nitrate	0.068303 Good	0.1855 Good	mg/L	< 50
Nitrite	0.002 Measured	0.002 Measured	mg/L	No limit
pH	7.326645 Normal	7.246875 Normal	pH units	6.5 – 8.5
Sodium	3.407692 Good	5.075 Good	mg/L	< 180
Sulfate	15.242424 Good	30.928571 Good	mg/L	< 500
Temperature	14.207188 Measured	14.54375 Measured	degrees C	No limit
Total Chlorine	1.277273 Good	1.361429 Good	mg/L	< 5
Total Coliforms	0 Compliant	0 Compliant	MPN/100ml	< 0
Total Dissolved Solids	55.333333 Good	91.916667 Good	mg/L	< 600
Trihalomethanes	0.045692 Good	0.027 Good	mg/L	< 0.25
Turbidity	0.349569 Good	0.412125 Good	NTU	< 5
Zinc	0.006538 Measured	0.004 Measured	mg/L	No limit

Explore further

Castra

Gunns Plains

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.