Derwent Park vs Lenah Valley

Name: Water Quality Comparison: Derwent Park vs Lenah Valley
Creator: WaterScore
License: https://creativecommons.org/licenses/by/4.0/

Side-by-side tap water quality comparison

Lenah Valley, TAS

9.1

Quality Score

Supplied by TasWater

Share this page Twitter Facebook LinkedIn

Which suburb has better water?

Derwent Park has better water quality with a score of 9.6/10 compared to Lenah Valley's 9.1/10. Lenah Valley has softer water (23.62963 vs 29.538462 mg/L).

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

As an Amazon Associate, WaterScore earns from qualifying purchases. We may also earn from other affiliate links on this page — this doesn't affect our recommendations.

Recommended for this suburb

Chlorine in Derwent Park is 0.866797 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.

BRITAOur pick

Marella 2.4L Fridge Water Filter Jug (Maxtra+)

4.7 · 16,095 ratings on Amazon

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.

Kill the taste →

Sponsored Amazon link · we may earn a commission at no cost to you. Check Amazon for current price and availability.

Visual comparison

Derwent Park, TAS

Lenah Valley, TAS

Key metrics comparison

Hardness (mg/L)

Derwent Park

29.538462 Higher

Lenah Valley

23.62963 Lower

pH Level

Derwent Park

7.272285 Normal

Lenah Valley

7.093328 Normal

Fluoride (mg/L)

Derwent Park

0.92 Lower

Lenah Valley

0.928333 Higher

Chlorine (mg/L)

Derwent Park

0.866797 Higher

Lenah Valley

0.815378 Lower

Full water quality comparison

All parameters compared against Australian Drinking Water Guidelines (ADWG)

Parameter	Derwent Park	Lenah Valley	Unit	ADWG Guideline
Alkalinity	13.071429 Measured	11.655172 Measured	mg/L	No limit
Aluminium	0.042 Good	0.027727 Good	mg/L	< 0.2
Ammonia	0.002286 Measured	0.002069 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	9.08 Measured	8.218182 Measured	mg/L	No limit
Chloride	8.4 Good	9.454545 Good	mg/L	< 250
Chromium	0.001 Measured	0.001 Measured	mg/L	No limit
Colour	2.285714 Good	2.642857 Good	Pt-Co	< 15
Conductivity	93.785714 Measured	75.827586 Measured	uS/cm	No limit
Copper	0.0263 Good	0.009318 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	0.92 Good	0.928333 Good	mg/L	< 1.5
Free Chlorine	0.866797 Good	0.815378 Good	mg/L	< 5
Hardness	29.538462 Good	23.62963 Good	mg/L	< 200
Iron	0.017 Good	0.02 Good	mg/L	< 0.3
Lead	0.001 Good	0.001 Good	mg/L	< 0.01
Magnesium	1.28 Measured	1.336364 Measured	mg/L	No limit
Manganese	0.0015 Good	0.002045 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	0.02895 Good	0.036897 Good	mg/L	< 50
Nitrite	0.002 Measured	0.002 Measured	mg/L	No limit
pH	7.272285 Normal	7.093328 Normal	pH units	6.5 – 8.5
Sodium	3.9 Good	3.572727 Good	mg/L	< 180
Sulfate	13.071429 Good	8.344828 Good	mg/L	< 500
Temperature	13.452148 Measured	13.052234 Measured	degrees C	No limit
Total Chlorine	1.304615 Good	1.214444 Good	mg/L	< 5
Total Coliforms	0 Compliant	4.790469 Detected	MPN/100ml	< 0
Total Dissolved Solids	62.307692 Good	49.148148 Good	mg/L	< 600
Trihalomethanes	0.0256 Good	0.022818 Good	mg/L	< 0.25
Turbidity	0.378691 Good	0.715031 Good	NTU	< 5
Zinc	0.0024 Measured	0.004091 Measured	mg/L	No limit

Explore further

Derwent Park

Lenah Valley

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.