Tap Water Quality in Maria Island, TAS
Postcode 7190 · Supplied by TasWater via Triabunna
Quality Score
About Maria Island
Maria Island is a suburb in Tasmania, Australia (postcode 7190). It falls within the TasWater area. Neighbouring suburbs include Apslawn, Buckland, Cranbrook, Dolphin Sands.
Most residents own their home with a mortgage (0%), while 0% own outright, while 0% rent. The median household income is $0 per year.
Tap water in Maria Island is supplied by TasWater. The suburb receives water via the Triabunna supply zone.
Water quality summary
Based on recent water quality reports, Maria Island achieves a WaterScore of 9.0 out of 10, rated excellent overall. Water hardness measures 73.8 mg/L, classified as moderately hard. This may cause light mineral deposits on fixtures over time. The pH level is 7.31875, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.863333 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 0.864063 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 250 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.321042 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.
Census Data
Suburb snapshot
Population
Median Age
Median Income
Recommended filters for Maria 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 Maria Island — removes chlorine taste and odour.
ZeroWater
23-Cup Dispenser (incl. TDS Meter)
4.3 · 27,123 ratings on Amazon
A reliable 23-cup dispenser (incl. tds meter) suitable for Maria Island's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Maria Island — removes chlorine taste and odour.
Comparison
How Maria Island compares
Compared to Tasmania and national averages
| Metric | Maria Island | TAS Avg | National Avg |
|---|---|---|---|
| Hardness | 73.8 mg/L | 34.8 mg/L | 85.1 mg/L |
| pH | 7.31875 | 7.4 | 8.4 |
| Fluoride | 0.863333 mg/L | 0.9 mg/L | 0.7 mg/L |
| Chlorine | 0.864063 mg/L | — | — |
| Turbidity | 0.321042 NTU | 0.3 NTU | 0.4 NTU |
| TDS | 250 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 | 39.5 | mg/L | No limit | Measured |
| Aluminium | 0.011667 | mg/L | < 0.2 | Good |
| Ammonia | 0.002214 | 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 | 16.285714 | mg/L | No limit | Measured |
| Chloride | 80.5 | mg/L | < 250 | Good |
| Free Chlorine | 0.864063 | mg/L | < 5 | Good |
| Total Chlorine | 0.734167 | mg/L | < 5 | Good |
| Chromium | 0.001 | mg/L | No limit | Measured |
| Colour | 2.142857 | Pt-Co | < 15 | Good |
| Conductivity | 422.142857 | uS/cm | No limit | Measured |
| Copper | 0.004167 | mg/L | < 2 | Good |
| Cyanide | 0.005 | mg/L | No limit | Measured |
| E. coli | 0 | MPN/100ml | < 0 | Compliant |
| Fluoride | 0.863333 | mg/L | < 1.5 | Good |
| Hardness | 73.8 | mg/L | < 200 | Good |
| Iron | 0.010833 | mg/L | < 0.3 | Good |
| Lead | 0.001 | mg/L | < 0.01 | Good |
| Magnesium | 9.042857 | mg/L | No limit | Measured |
| Manganese | 0.009083 | mg/L | < 0.1 | Good |
| Mercury | 0.0001 | mg/L | No limit | Measured |
| Nickel | 0.001 | mg/L | No limit | Measured |
| Nitrate | 0.030071 | mg/L | < 50 | Good |
| Nitrite | 0.002 | mg/L | No limit | Measured |
| pH | 7.31875 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 42.857143 | mg/L | < 180 | Good |
| Sulfate | 48.428571 | mg/L | < 500 | Good |
| Temperature | 15.097917 | degrees C | No limit | Measured |
| Total Coliforms | 2.912903 | MPN/100ml | < 0 | Detected |
| Total Dissolved Solids | 250 | mg/L | < 600 | Good |
| Trihalomethanes | 0.069 | mg/L | < 0.25 | Good |
| Turbidity | 0.321042 | NTU | < 5 | Good |
| Zinc | 0.005083 | mg/L | No limit | Measured |
Safety
Safety assessment
Of 35 parameters tested, most fall within Australian Drinking Water Guidelines with 1 exception: Total Coliforms at 2.912903 MPN/100ml. 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
Moderately hard (73.8 mg/L)
Water Hardness
Your water is moderately hard. You may notice light limescale deposits on kettle elements and taps over time. Soap lathers reasonably well, though slightly more product may be needed. Skin and hair are generally unaffected, and appliance lifespan should not be significantly reduced at this level.
Normal Range
pH Level
pH of 7.31875 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 0.863333 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine
Disinfection
Chlorine measured at 0.864063 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 Maria Island measures 0.864063 mg/L, which is low. Filling a jug and letting it stand for 30 minutes will reduce any residual taste.
Soft Water Advantage
Maria Island's water is moderately hard at 73.8 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.863333 mg/L in Maria 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 Maria Island's water data is updated.
FAQ
Frequently asked questions
Is tap water safe to drink in Maria Island?
How hard is the water in Maria Island?
What water utility supplies Maria Island?
Does Maria Island water have fluoride?
What is the water quality score for Maria Island?
What is the population of Maria Island?
Supplier
Water utility
- Utility
- TasWater
- Supply Zone
- Triabunna
- Data Source
- TasWater — Triabunna
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 8.0 and 10.0
Utility reports average the grid — not your home
Maria 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 Maria Island
Related
Explore more
Related pages for Maria Island, TAS
Is tap water safe?
Safety assessment
Water hardness
73.8 mg/L
Best water filter
Filter recommendations
Tasmania water quality
State coverage
TasWater
Water utility
Compare with Apslawn
Maria Island vs Apslawn
Compare with Buckland
Maria Island vs Buckland
Compare with Cranbrook
Maria Island vs Cranbrook
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.