Tap Water Quality in Tasman Island, TAS
Postcode 7001 · Supplied by TasWater via Kingborough Greater Hobart
Quality Score
About Tasman Island
Tasman Island is a suburb in Tasmania, Australia (postcode 7001). It falls within the TasWater area. Neighbouring suburbs include Catamaran, Crabtree, Cradoc, Glaziers Bay.
Tap water in Tasman Island is supplied by TasWater. The suburb receives water via the Kingborough Greater Hobart supply zone.
Water quality summary
Based on recent water quality reports, Tasman Island achieves a WaterScore of 9.7 out of 10, rated excellent overall. Water hardness measures 17.5 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 7.125666, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.953333 mg/L, within the recommended range of 0.6–1.1 mg/L for dental health, well under the ADWG maximum of 1.5 mg/L. Chlorine, used for disinfection, measures 0.762816 mg/L — well within the ADWG guideline of 5 mg/L. Some residents may notice a slight taste, which can be reduced by refrigerating water or using a carbon filter. Total dissolved solids (TDS) measure 38.789474 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.481092 NTU, indicating clear water, within the ADWG guideline of 5 NTU. E. coli was not detected in testing, meeting the ADWG standard for microbiological safety.
Recommended filters for Tasman Island
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
Ideal for Tasman Island — removes chlorine taste and odour.
ZeroWater
2.8L 5-Stage Jug (PFAS + Fluoride + Lead, IAPMO Certified)
4.2 · 5,315 ratings on Amazon
A reliable 2.8l 5-stage jug (pfas + fluoride + lead, iapmo certified) suitable for Tasman Island's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Tasman Island — removes chlorine taste and odour.
Comparison
How Tasman Island compares
Compared to Tasmania and national averages
| Metric | Tasman Island | TAS Avg | National Avg |
|---|---|---|---|
| Hardness | 17.5 mg/L | 34.8 mg/L | 85.1 mg/L |
| pH | 7.125666 | 7.4 | 8.4 |
| Fluoride | 0.953333 mg/L | 0.9 mg/L | 0.7 mg/L |
| Chlorine | 0.762816 mg/L | — | — |
| Turbidity | 0.481092 NTU | 0.3 NTU | 0.4 NTU |
| TDS | 38.789474 mg/L | 93.3 mg/L | 275.7 mg/L |
Full Results
Detailed water quality data
All values compared against Australian Drinking Water Guidelines (ADWG)
| Parameter | Value | Unit | ADWG Guideline | Status |
|---|---|---|---|---|
| Alkalinity | 9 | mg/L | No limit | Measured |
| Aluminium | 0.016429 | mg/L | < 0.2 | Good |
| Ammonia | 0.002263 | mg/L | No limit | Measured |
| Antimony | 0.001 | mg/L | No limit | Measured |
| Arsenic | 0.001 | mg/L | No limit | Measured |
| Cadmium | 0.0002 | mg/L | No limit | Measured |
| Calcium | 4.9 | mg/L | No limit | Measured |
| Chloride | 7.428571 | mg/L | < 250 | Good |
| Free Chlorine | 0.762816 | mg/L | < 5 | Good |
| Total Chlorine | 0.9255 | mg/L | < 5 | Good |
| Chromium | 0.001 | mg/L | No limit | Measured |
| Colour | 2.473684 | Pt-Co | < 15 | Good |
| Conductivity | 59.368421 | uS/cm | No limit | Measured |
| Copper | 0.007714 | mg/L | < 2 | Good |
| Cyanide | 0.005 | mg/L | No limit | Measured |
| E. coli | 0 | MPN/100ml | < 0 | Compliant |
| Fluoride | 0.953333 | mg/L | < 1.5 | Good |
| Hardness | 17.5 | mg/L | < 200 | Good |
| Iron | 0.026429 | mg/L | < 0.3 | Good |
| Lead | 0.001 | mg/L | < 0.01 | Good |
| Magnesium | 1.057143 | mg/L | No limit | Measured |
| Manganese | 0.001786 | mg/L | < 0.1 | Good |
| Mercury | 0.0001 | mg/L | No limit | Measured |
| Nickel | 0.001 | mg/L | No limit | Measured |
| Nitrate | 0.009158 | mg/L | < 50 | Good |
| Nitrite | 0.002 | mg/L | No limit | Measured |
| pH | 7.125666 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 3.171429 | mg/L | < 180 | Good |
| Sulfate | 3.578947 | mg/L | < 500 | Good |
| Temperature | 13.215529 | degrees C | No limit | Measured |
| Total Coliforms | 0 | MPN/100ml | < 0 | Compliant |
| Total Dissolved Solids | 38.789474 | mg/L | < 600 | Good |
| Trihalomethanes | 0.04 | mg/L | < 0.25 | Good |
| Turbidity | 0.481092 | NTU | < 5 | Good |
| Zinc | 0.004 | mg/L | No limit | Measured |
Safety
Safety assessment
Based on 35 parameters tested, all results fall within Australian Drinking Water Guidelines. E. coli was not detected, meeting the ADWG standard for microbiological safety.
Based on comparison with Australian Drinking Water Guidelines (ADWG)
Explained
What these numbers mean
Soft (17.5 mg/L)
Water Hardness
Your water is classified as soft, which means minimal limescale buildup on fixtures and appliances. Soap and shampoo will lather easily, and you should notice no drying effects on skin or hair. Hot water systems and kettles are unlikely to suffer scale-related efficiency losses.
Normal Range
pH Level
pH of 7.125666 is within the ideal range of 6.5–8.5. The ADWG recommends pH between 6.5 and 8.5 for drinking water.
Fluoridated
Fluoride
Fluoride at 0.953333 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine
Disinfection
Chlorine measured at 0.762816 mg/L, well within the ADWG guideline of 5 mg/L. Used for disinfection to keep water safe. May affect taste slightly — refrigerating water or using a carbon filter can help.
Learn more about these measurements in our water quality glossary — including Hardness , pH , Fluoride , and ADWG guidelines .
Advice
Practical tips for residents
Chlorine Levels Are Low
Chlorine in Tasman Island measures 0.762816 mg/L, which is low. Filling a jug and letting it stand for 30 minutes will reduce any residual taste.
Soft Water Advantage
Tasman Island's water is soft at 17.5 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.953333 mg/L in Tasman Island. Australian guidelines allow up to 1.5 mg/L. This is added by utilities to support dental health in the community.
Get water quality alerts
We'll email you when Tasman Island's water data is updated.
FAQ
Frequently asked questions
Is tap water safe to drink in Tasman Island?
How hard is the water in Tasman Island?
What water utility supplies Tasman Island?
Does Tasman Island water have fluoride?
What is the water quality score for Tasman Island?
Supplier
Water utility
- Utility
- TasWater
- Supply Zone
- Kingborough Greater Hobart
- Data Source
- TasWater — Kingborough Greater Hobart
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 8.7 and 10.0
Utility reports average the grid — not your home
Tasman Island's water meets ADWG standards at the source, but old pipes, roof tanks, and ageing plumbing can add lead, copper or bacteria before the water reaches your tap. These won't show up in your utility report.
Check your own tap before buying a filter or assuming the suburb average matches your home.
Tetra
EasyStrips 6-in-1 Water Test (100 strips)
4.6 · 8,650 ratings on Amazon
Tests 6 parameters in 60 seconds: hardness, chlorine, pH, nitrate, nitrite, alkalinity. Cheapest way to verify your utility data.
Test my tap →Sponsored Amazon link. Check Amazon for current price and availability.
Heavy Metals
Drinking Water Test Kit (Lead, Copper, Iron, Mercury)
4.2 · 250 ratings on Amazon
20 tests. Detects lead, copper, iron, mercury — the things utility reports miss. Mobile-app results, EPA-standard thresholds.
Check metals kit →Sponsored Amazon link. Check Amazon for current price and availability.
Guides for Hobart and Tasmania
In-depth articles on the water supply that serves Tasman Island
Related
Explore more
Related pages for Tasman Island, TAS
Is tap water safe?
Safety assessment
Water hardness
17.5 mg/L
Best water filter
Filter recommendations
Tasmania water quality
State coverage
TasWater
Water utility
Compare with Catamaran
Tasman Island vs Catamaran
Compare with Crabtree
Tasman Island vs Crabtree
Compare with Cradoc
Tasman Island vs Cradoc
Disclaimer: The information on this page is for general informational purposes only and does not constitute medical advice, health recommendations, or professional guidance. Water quality data is sourced from TasWater (annual report) and reflects conditions at the time of utility testing — it may not reflect real-time water quality at your tap. Actual water quality can vary due to local plumbing, seasonal changes, and distance from the treatment plant. For specific health concerns, consult a qualified health professional. For the most current water quality information, contact your local water utility directly. See our Terms of Use.