Tap Water Quality in Cranbrook, TAS
Postcode 7190 · Supplied by TasWater via Swansea
Quality Score
About Cranbrook
Cranbrook is a suburb of 60 residents in Tasmania (postcode 7190). The median age is 54. It falls within the TasWater area. Neighbouring suburbs include Apslawn, Buckland, Dolphin Sands, Little Swanport.
Most residents own outright (46%), while 33% own their home with a mortgage, while 17% rent. The median household income is $68,224 per year. The top countries of birth for residents are United Kingdom (67%).
Tap water in Cranbrook is supplied by TasWater. The suburb receives water via the Swansea supply zone.
Water quality summary
Based on recent water quality reports, Cranbrook achieves a WaterScore of 9.6 out of 10, rated excellent overall. Water hardness measures 51 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 7.220625, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.82 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 1.102396 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 147.5 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.319271 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: Apslawn , Buckland , Dolphin Sands
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Cranbrook
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
Ideal for Cranbrook — 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 Cranbrook's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Cranbrook — removes chlorine taste and odour.
Comparison
How Cranbrook compares
Compared to Tasmania and national averages
| Metric | Cranbrook | TAS Avg | National Avg |
|---|---|---|---|
| Hardness | 51 mg/L | 34.8 mg/L | 85.1 mg/L |
| pH | 7.220625 | 7.4 | 8.4 |
| Fluoride | 0.82 mg/L | 0.9 mg/L | 0.7 mg/L |
| Chlorine | 1.102396 mg/L | — | — |
| Turbidity | 0.319271 NTU | 0.3 NTU | 0.4 NTU |
| TDS | 147.5 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 | 47.5 | mg/L | No limit | Measured |
| Aluminium | 0.02125 | mg/L | < 0.2 | Good |
| Ammonia | 0.002083 | 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 | 10.4 | mg/L | No limit | Measured |
| Chloride | 35.75 | mg/L | < 250 | Good |
| Free Chlorine | 1.102396 | mg/L | < 5 | Good |
| Total Chlorine | 1.490714 | mg/L | < 5 | Good |
| Chromium | 0.001 | mg/L | No limit | Measured |
| Colour | 2.083333 | Pt-Co | < 15 | Good |
| Conductivity | 241.666667 | uS/cm | No limit | Measured |
| Copper | 0.014125 | mg/L | < 2 | Good |
| Cyanide | 0.005 | mg/L | No limit | Measured |
| E. coli | 0 | MPN/100ml | < 0 | Compliant |
| Fluoride | 0.82 | mg/L | < 1.5 | Good |
| Hardness | 51 | mg/L | < 200 | Good |
| Iron | 0.01 | mg/L | < 0.3 | Good |
| Lead | 0.001 | mg/L | < 0.01 | Good |
| Magnesium | 6.425 | 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 | 0.00525 | mg/L | < 50 | Good |
| Nitrite | 0.002 | mg/L | No limit | Measured |
| pH | 7.220625 | pH units | 6.5 – 8.5 | Normal |
| Sodium | 16.167333 | mg/L | < 180 | Good |
| Sulfate | 22.916667 | mg/L | < 500 | Good |
| Temperature | 14.673958 | degrees C | No limit | Measured |
| Total Coliforms | 0 | MPN/100ml | < 0 | Compliant |
| Total Dissolved Solids | 147.5 | mg/L | < 600 | Good |
| Trihalomethanes | 0.0165 | mg/L | < 0.25 | Good |
| Turbidity | 0.319271 | NTU | < 5 | Good |
| Zinc | 0.006125 | 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 (51 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 7.220625 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 0.82 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine
Disinfection
Chlorine measured at 1.102396 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
Reduce Chlorine Taste
Cranbrook's chlorine level is 1.102396 mg/L. An activated carbon jug filter or benchtop unit can noticeably reduce chlorine taste and odour from tap water.
Soft Water Advantage
Cranbrook's water is soft at 51 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.82 mg/L in Cranbrook. 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 Cranbrook's water data is updated.
FAQ
Frequently asked questions
Is tap water safe to drink in Cranbrook?
How hard is the water in Cranbrook?
What water utility supplies Cranbrook?
Does Cranbrook water have fluoride?
What is the water quality score for Cranbrook?
What is the population of Cranbrook?
Supplier
Water utility
- Utility
- TasWater
- Supply Zone
- Swansea
- Data Source
- TasWater — Swansea
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
Cranbrook'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 Cranbrook
Related
Explore more
Related pages for Cranbrook, TAS
Is tap water safe?
Safety assessment
Water hardness
51 mg/L
Best water filter
Filter recommendations
Tasmania water quality
State coverage
TasWater
Water utility
Compare with Apslawn
Cranbrook vs Apslawn
Compare with Buckland
Cranbrook vs Buckland
Compare with Dolphin Sands
Cranbrook vs Dolphin Sands
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.