Tap Water Quality in William Creek, SA
Postcode 5723 · Supplied by SA Water via Marree
Quality Score
About William Creek
William Creek is a suburb of 17 residents in South Australia (postcode 5723). The median age is 30. It falls within the SA Water area. Neighbouring suburbs include Anna Creek, Nilpinna Station, Billa Kalina, Stuarts Creek.
Most residents own their home with a mortgage (0%), while 0% own outright, while 0% rent. The median household income is $195,000 per year.
Tap water in William Creek is supplied by SA Water. The suburb receives water via the Marree supply zone.
Water quality summary
Based on 2025 water quality reports, William Creek achieves a WaterScore of 9.6 out of 10, rated excellent overall. Water hardness measures 38 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The water is fluoridated at 0.25 mg/L, well under the ADWG maximum of 1.5 mg/L. Chlorine, used for disinfection, measures 1.1 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 242 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.3 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: Anna Creek , Nilpinna Station , Billa Kalina
Census Data
Suburb snapshot
Population
Median Age
Median Income
Recommended filters for William Creek
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra Pro)
4.8 · 125 ratings on Amazon
Ideal for William Creek — removes chlorine taste and odour.
ZeroWater
2.8L 5-Stage Jug (IAPMO Certified: PFOA/PFOS + Lead)
4.2 · 5,315 ratings on Amazon
A reliable 2.8l 5-stage jug (iapmo certified: pfoa/pfos + lead) suitable for William Creek's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for William Creek — removes chlorine taste and odour.
Comparison
How William Creek compares
Compared to South Australia and national averages
| Metric | William Creek | SA Avg | National Avg |
|---|---|---|---|
| Hardness | 38 mg/L | 119.3 mg/L | 80.3 mg/L |
| pH | — | 8.6 | 7.8 |
| Fluoride | 0.25 mg/L | 0.5 mg/L | 0.7 mg/L |
| Chlorine | 1.1 mg/L | — | — |
| Turbidity | 0.3 NTU | 0.1 NTU | 0.4 NTU |
| TDS | 242 mg/L | 341.5 mg/L | 267.4 mg/L |
Full Results
Detailed water quality data
All values compared against Australian Drinking Water Guidelines (ADWG)
| Parameter | Value | Unit | ADWG Guideline | Status |
|---|---|---|---|---|
| Alkalinity | 96 | mg/L | No limit | Measured |
| Aluminium | 0.006 | mg/L | < 0.2 | Good |
| Calcium | 13.6 | mg/L | No limit | Measured |
| Chloride | 76 | mg/L | < 250 | Good |
| Free Chlorine | 1.1 | mg/L | < 5 | Good |
| Total Chlorine | 1.2 | mg/L | < 5 | Good |
| Colour | 1 | HU | < 15 | Good |
| Copper | 0.0081 | mg/L | < 2 | Good |
| E. coli | 0 | MPN/100mL | < 0 | Compliant |
| Fluoride | 0.25 | mg/L | < 1.5 | Good |
| Hardness | 38 | PPM or mg/L | < 200 | Good |
| Iron | 0.028 | mg/L | < 0.3 | Good |
| Lead | 0.0011 | mg/L | < 0.01 | Good |
| Magnesium | 0.9 | mg/L | No limit | Measured |
| Manganese | 0.001 | mg/L | < 0.1 | Good |
| Nitrate | 0.15 | mg/L | < 50 | Good |
| Sodium | 76.4 | mg/L | < 180 | Good |
| Sulfate | 0.6 | mg/L | < 500 | Good |
| Total Dissolved Solids | 242 | mg/L | < 600 | Good |
| Turbidity | 0.3 | NTU | < 5 | Good |
Safety
Safety assessment
Based on 20 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 (38 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.
Data unavailable
pH Level
pH data is not currently available for William Creek.
Fluoridated
Fluoride
Fluoride at 0.25 mg/L. Below the recommended range.
Chlorine
Disinfection
Chlorine measured at 1.1 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
William Creek's chlorine level is 1.1 mg/L. An activated carbon jug filter or benchtop unit can noticeably reduce chlorine taste and odour from tap water.
Soft Water Advantage
William Creek's water is soft at 38 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.25 mg/L in William Creek. 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 William Creek?
How hard is the water in William Creek?
What water utility supplies William Creek?
Does William Creek water have fluoride?
What is the water quality score for William Creek?
What is the population of William Creek?
Supplier
Water utility
- Utility
- SA Water
- Supply Zone
- Marree
- Data Source
- SA Water — water quality performance results november 2025
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
William Creek'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 Adelaide and SA
In-depth articles on the water supply that serves William Creek
Cite
Cite this page
Free to quote and reuse with a credit to WaterScore and a link to this page. Journalists and researchers can find key figures and contacts on our press and data page.
WaterScore. (2026). Tap water quality in William Creek, SA [Data set]. Compiled from SA Water data (2025 report). https://waterscore.com.au/water-quality/william-creek-sa/
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Related
Explore more
Related pages for William Creek, SA
Is tap water safe?
Safety assessment
Water hardness
38 mg/L
Best water filter
Filter recommendations
South Australia water quality
State coverage
SA Water
Water utility
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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 SA Water (2025 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.