Tap Water Quality in Hamilton, TAS
Postcode 7140 · Supplied by TasWater via Ouse
Quality Score
About Hamilton
Hamilton is a suburb of 241 residents in Tasmania (postcode 7140). The median age is 44. It falls within the TasWater area. Neighbouring suburbs include Black Hills, Boyer, Bradys Lake, Butlers Gorge.
Most residents own outright (38%), while 28% own their home with a mortgage, while 17% rent. The median household income is $51,324 per year. The top countries of birth for residents are United Kingdom (46%) and Philippines (14%).
Tap water in Hamilton is supplied by TasWater. The suburb receives water via the Ouse supply zone.
Water quality summary
Based on recent water quality reports, Hamilton achieves a WaterScore of 9.7 out of 10, rated excellent overall. Water hardness measures 15.083333 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 6.956406, which is within the ADWG guideline range of 6.5–8.5. Chlorine, used for disinfection, measures 0.683281 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 48.75 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.31619 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.
Compare with nearby suburbs: Black Hills , Boyer , Bradys Lake
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Hamilton
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
Ideal for Hamilton — 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 Hamilton's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Hamilton — removes chlorine taste and odour.
Comparison
How Hamilton compares
Compared to Tasmania and national averages
| Metric | Hamilton | TAS Avg | National Avg |
|---|---|---|---|
| Hardness | 15.083333 mg/L | 34.8 mg/L | 85.1 mg/L |
| pH | 6.956406 | 7.4 | 8.4 |
| Fluoride | — | 0.9 mg/L | 0.7 mg/L |
| Chlorine | 0.683281 mg/L | — | — |
| Turbidity | 0.31619 NTU | 0.3 NTU | 0.4 NTU |
| TDS | 48.75 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 | 6.142857 | mg/L | No limit | Measured |
| Aluminium | 0.01625 | mg/L | < 0.2 | Good |
| Ammonia | 0.002143 | 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 | 4.5 | mg/L | No limit | Measured |
| Chloride | 8 | mg/L | < 250 | Good |
| Free Chlorine | 0.683281 | mg/L | < 5 | Good |
| Total Chlorine | 0.822143 | mg/L | < 5 | Good |
| Chromium | 0.001 | mg/L | No limit | Measured |
| Colour | 2.357143 | Pt-Co | < 15 | Good |
| Conductivity | 76.857143 | uS/cm | No limit | Measured |
| Copper | 0.00525 | mg/L | < 2 | Good |
| Cyanide | 0.005 | mg/L | No limit | Measured |
| E. coli | 0 | MPN/100ml | < 0 | Compliant |
| Hardness | 15.083333 | mg/L | < 200 | Good |
| Iron | 0.01 | mg/L | < 0.3 | Good |
| Lead | 0.001 | mg/L | < 0.01 | Good |
| Magnesium | 0.95 | mg/L | No limit | Measured |
| Manganese | 0.001 | mg/L | < 0.1 | Good |
| Mercury | 0.0001 | mg/L | No limit | Measured |
| Nickel | 0.001 | mg/L | No limit | Measured |
| Nitrate | 0.030929 | mg/L | < 50 | Good |
| Nitrite | 0.002 | mg/L | No limit | Measured |
| pH | 6.956406 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 5.8 | mg/L | < 180 | Good |
| Sulfate | 15.285714 | mg/L | < 500 | Good |
| Temperature | 12.567187 | degrees C | No limit | Measured |
| Total Coliforms | 0 | MPN/100ml | < 0 | Compliant |
| Total Dissolved Solids | 48.75 | mg/L | < 600 | Good |
| Trihalomethanes | 0.0185 | mg/L | < 0.25 | Good |
| Turbidity | 0.31619 | NTU | < 5 | Good |
| Zinc | 0.003125 | mg/L | No limit | Measured |
Safety
Safety assessment
Based on 34 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 (15.083333 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 6.956406 is within the ideal range of 6.5–8.5. The ADWG recommends pH between 6.5 and 8.5 for drinking water.
Data unavailable
Fluoride
Fluoride data is not currently available for Hamilton.
Chlorine
Disinfection
Chlorine measured at 0.683281 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 Hamilton measures 0.683281 mg/L, which is low. Filling a jug and letting it stand for 30 minutes will reduce any residual taste.
Soft Water Advantage
Hamilton's water is soft at 15.083333 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Flush After Absence
If your home has been unoccupied for several days, run the kitchen tap for 30 seconds before drinking. This clears stale water that has been sitting in pipes.
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We'll email you when Hamilton's water data is updated.
FAQ
Frequently asked questions
Is tap water safe to drink in Hamilton?
How hard is the water in Hamilton?
What water utility supplies Hamilton?
Does Hamilton water have fluoride?
What is the water quality score for Hamilton?
What is the population of Hamilton?
Supplier
Water utility
- Utility
- TasWater
- Supply Zone
- Ouse
- Data Source
- TasWater — Ouse
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
Hamilton'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 Hamilton
Related
Explore more
Related pages for Hamilton, TAS
Is tap water safe?
Safety assessment
Water hardness
15.083333 mg/L
Best water filter
Filter recommendations
Tasmania water quality
State coverage
TasWater
Water utility
Compare with Black Hills
Hamilton vs Black Hills
Compare with Boyer
Hamilton vs Boyer
Compare with Bradys Lake
Hamilton vs Bradys Lake
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.