Grasstree Hill vs Otago

Name: Water Quality Comparison: Grasstree Hill vs Otago
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Otago, TAS

9.6

Quality Score

Supplied by TasWater

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Which suburb has better water?

It's very close! Grasstree Hill scores 9.8/10 and Otago 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 Grasstree Hill is 0.829548 mg/L — above the taste threshold. That pool smell in every glass is real.

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

Grasstree Hill, TAS

Otago, TAS

Key metrics comparison

Hardness (mg/L)

Grasstree Hill

46.285714 Lower

Otago

49 Higher

pH Level

Grasstree Hill

7.414137 Normal

Otago

8.073952 Normal

Fluoride (mg/L)

Grasstree Hill

—

Otago

0.913333

Chlorine (mg/L)

Grasstree Hill

0.829548 Higher

Otago

0.414032 Lower

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Grasstree Hill	Otago	Unit	ADWG Guideline
Alkalinity	19.727273 Measured	26.142857 Measured	mg/L	No limit
Aluminium	0.033333 Good	0.036667 Good	mg/L	< 0.2
Ammonia	0.002182 Measured	0.003571 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	16.666667 Measured	17.666667 Measured	mg/L	No limit
Chloride	10.111111 Good	9.666667 Good	mg/L	< 250
Chromium	0.001 Measured	0.001 Measured	mg/L	No limit
Colour	2.238095 Good	2 Good	Pt-Co	< 15
Conductivity	121.363636 Measured	135.714286 Measured	uS/cm	No limit
Copper	0.007944 Good	0.001 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	—	0.913333 Good	mg/L	< 1.5
Free Chlorine	0.829548 Good	0.414032 Good	mg/L	< 5
Hardness	46.285714 Good	49 Good	mg/L	< 200
Iron	0.012222 Good	0.01 Good	mg/L	< 0.3
Lead	0.001 Good	0.001 Good	mg/L	< 0.01
Magnesium	2.511111 Measured	1.433333 Measured	mg/L	No limit
Manganese	0.001111 Good	0.001 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	0.040409 Good	0.051143 Good	mg/L	< 50
Nitrite	0.002 Measured	0.002 Measured	mg/L	No limit
pH	7.414137 Normal	8.073952 Normal	pH units	6.5 – 8.5
Sodium	4.333333 Good	4.666667 Good	mg/L	< 180
Sulfate	20 Good	23 Good	mg/L	< 500
Temperature	13.944521 Measured	13.65 Measured	degrees C	No limit
Total Chlorine	0.966842 Good	0.305 Good	mg/L	< 5
Total Coliforms	0 Compliant	0 Compliant	MPN/100ml	< 0
Total Dissolved Solids	75.285714 Good	78.285714 Good	mg/L	< 600
Trihalomethanes	0.027556 Good	0.057 Good	mg/L	< 0.25
Turbidity	0.310575 Good	0.292016 Good	NTU	< 5
Zinc	0.004056 Measured	0.002333 Measured	mg/L	No limit

Explore further

Grasstree Hill

Otago

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.