Tap Water Quality in Robigana, TAS
Postcode 7275 · Supplied by TasWater via West Tamar Launceston
Quality Score
About Robigana
Robigana is a suburb of 111 residents in Tasmania (postcode 7275). The median age is 57. It falls within the TasWater area. Neighbouring suburbs include Blackwall, Deviot, Exeter, Frankford.
Most residents own outright (56%), while 49% own their home with a mortgage, while 12% rent. The median household income is $68,224 per year. The top countries of birth for residents are United Kingdom (61%) and United States (11%).
Tap water in Robigana is supplied by TasWater. The suburb receives water via the West Tamar Launceston supply zone.
Water quality summary
Based on recent water quality reports, Robigana achieves a WaterScore of 9.6 out of 10, rated excellent overall. Water hardness measures 45.894737 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 7.330935, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.983333 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 0.767982 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 101.444444 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.369509 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
Owner-occupied
Recommended filters for Robigana
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
Ideal for Robigana — removes chlorine taste and odour.
Waterdrop
TSA Under-Sink Filter (Fluoride + PFAS)
4.4 · 2,237 ratings on Amazon
A reliable tsa under-sink filter (fluoride + pfas) suitable for Robigana's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Robigana — removes chlorine taste and odour.
Comparison
How Robigana compares
Compared to Tasmania and national averages
| Metric | Robigana | TAS Avg | National Avg |
|---|---|---|---|
| Hardness | 45.894737 mg/L | 34.8 mg/L | 85.1 mg/L |
| pH | 7.330935 | 7.4 | 8.4 |
| Fluoride | 0.983333 mg/L | 0.9 mg/L | 0.7 mg/L |
| Chlorine | 0.767982 mg/L | — | — |
| Turbidity | 0.369509 NTU | 0.3 NTU | 0.4 NTU |
| TDS | 101.444444 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 | 17.157895 | mg/L | No limit | Measured |
| Aluminium | 0.023333 | mg/L | < 0.2 | Good |
| Ammonia | 0.002211 | 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 | 13.4 | mg/L | No limit | Measured |
| Chloride | 25 | mg/L | < 250 | Good |
| Free Chlorine | 0.767982 | mg/L | < 5 | Good |
| Total Chlorine | 1.02 | mg/L | < 5 | Good |
| Chromium | 0.001 | mg/L | No limit | Measured |
| Colour | 2.526316 | Pt-Co | < 15 | Good |
| Conductivity | 167.222222 | uS/cm | No limit | Measured |
| Copper | 0.00775 | mg/L | < 2 | Good |
| Cyanide | 0.005 | mg/L | No limit | Measured |
| E. coli | 0 | MPN/100ml | < 0 | Compliant |
| Fluoride | 0.983333 | mg/L | < 1.5 | Good |
| Hardness | 45.894737 | mg/L | < 200 | Good |
| Iron | 0.018333 | mg/L | < 0.3 | Good |
| Lead | 0.001 | mg/L | < 0.01 | Good |
| Magnesium | 3.671429 | mg/L | No limit | Measured |
| Manganese | 0.00425 | mg/L | < 0.1 | Good |
| Mercury | 0.0001 | mg/L | No limit | Measured |
| Nickel | 0.001 | mg/L | No limit | Measured |
| Nitrate | 0.244337 | mg/L | < 50 | Good |
| Nitrite | 0.002 | mg/L | No limit | Measured |
| pH | 7.330935 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 9.8625 | mg/L | < 180 | Good |
| Sulfate | 19.473684 | mg/L | < 500 | Good |
| Temperature | 14.33192 | degrees C | No limit | Measured |
| Total Coliforms | 0 | MPN/100ml | < 0 | Compliant |
| Total Dissolved Solids | 101.444444 | mg/L | < 600 | Good |
| Trihalomethanes | 0.051571 | mg/L | < 0.25 | Good |
| Turbidity | 0.369509 | NTU | < 5 | Good |
| Zinc | 0.007417 | 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 (45.894737 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 7.330935 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 0.983333 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine
Disinfection
Chlorine measured at 0.767982 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 Robigana measures 0.767982 mg/L, which is low. Filling a jug and letting it stand for 30 minutes will reduce any residual taste.
Soft Water Advantage
Robigana's water is soft at 45.894737 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.983333 mg/L in Robigana. Australian guidelines allow up to 1.5 mg/L. This is added by utilities to support dental health in the community.
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FAQ
Frequently asked questions
Is tap water safe to drink in Robigana?
How hard is the water in Robigana?
What water utility supplies Robigana?
Does Robigana water have fluoride?
What is the water quality score for Robigana?
What is the population of Robigana?
Supplier
Water utility
- Utility
- TasWater
- Supply Zone
- West Tamar Launceston
- Data Source
- TasWater — West Tamar Launceston
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 8.6 and 10.0
Utility reports average the grid — not your home
Robigana'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 Launceston and northern Tasmania
In-depth articles on the water supply that serves Robigana
Related
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Related pages for Robigana, TAS
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.