Tap Water Quality in Wallarah, NSW
Postcode 2259 · Supplied by Central Coast Council via Central Coast System
Quality Score
About Wallarah
Wallarah is a suburb of 344 residents in New South Wales (postcode 2259). The median age is 42. It falls within the Central Coast Council area. Neighbouring suburbs include Woongarrah, Bushells Ridge, Kiar, Charmhaven.
Most residents own their home with a mortgage (37%), while 37% own outright, while 22% rent. The median household income is $98,124 per year. The top countries of birth for residents are United Kingdom (26%), New Zealand (19%), and Italy (9%).
Tap water in Wallarah is supplied by Central Coast Council. The suburb receives water via the Central Coast System supply zone.
Water quality summary
Based on 2025 water quality reports, Wallarah achieves a WaterScore of 9.1 out of 10, rated excellent overall. Water hardness measures 49 mg/L, classified as soft. This is gentle on appliances and skin, with minimal limescale buildup expected. The pH level is 7.6, which is within the ADWG guideline range of 6.5–8.5. The water is fluoridated at 0.79 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 1.19 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 46 mg/L, considered low against the ADWG guideline of 600 mg/L. Turbidity is 0.56 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: Woongarrah , Bushells Ridge , Kiar
Census Data
Suburb snapshot
Population
Median Age
Median Income
Owner-occupied
Recommended filters for Wallarah
Products matched to your water profile
BRITA
Marella 2.4L Fridge Water Filter Jug (Maxtra+)
4.7 · 16,095 ratings on Amazon
Ideal for Wallarah — 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 Wallarah's water profile.
Purewell
8.5L Stainless Steel Gravity System
4.4 · 1,137 ratings on Amazon
Ideal for Wallarah — removes chlorine taste and odour.
Comparison
How Wallarah compares
Compared to New South Wales and national averages
| Metric | Wallarah | NSW Avg | National Avg |
|---|---|---|---|
| Hardness | 49 mg/L | 45.9 mg/L | 85.1 mg/L |
| pH | 7.6 | 7.7 | 8.4 |
| Fluoride | 0.79 mg/L | 1 mg/L | 0.7 mg/L |
| Chlorine | 1.19 mg/L | — | — |
| Turbidity | 0.56 NTU | 0.2 NTU | 0.4 NTU |
| TDS | 46 mg/L | 116.3 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 |
|---|---|---|---|---|
| E. coli | 0 | MPN/100mL | < 0 | Compliant |
| Free Chlorine | 1.19 | mg/L | < 5 | Good |
| Total Chlorine | 1.4 | mg/L | < 5 | Good |
| Copper | 0.018 | mg/L | < 2 | Good |
| Lead | 0.0004 | mg/L | < 0.01 | Good |
| Manganese | 0.006 | mg/L | < 0.1 | Good |
| Fluoride | 0.79 | mg/L | < 1.5 | Good |
| Trihalomethanes | 115 | mg/L | < 0.25 | Exceeds |
| pH | 7.6 | pH units | 6.5 – 8.5 | Normal |
| Turbidity | 0.56 | NTU | < 5 | Good |
| Colour | 1 | HU | < 15 | Good |
| Hardness | 49 | mg/L CaCO3 | < 200 | Good |
| Total Dissolved Solids | 46 | mg/L | < 600 | Good |
| Aluminium | 0.04 | mg/L | < 0.2 | Good |
| Zinc | 0.01 | mg/L | No limit | Measured |
| PFOS | 0.001 | µg/L | < 0.07 | Good |
| Pfhxs | 0.001 | µg/L | No limit | Measured |
| PFOA | 0.001 | µg/L | < 0.56 | Good |
| Pfbs | 0.001 | µg/L | No limit | Measured |
| Iron | 0.02 | mg/L | < 0.3 | Good |
| Pfos Pfhxs | 0.002 | µg/L | No limit | Measured |
Safety
Safety assessment
Of 21 parameters tested, most fall within Australian Drinking Water Guidelines with 1 exception: Trihalomethanes at 115 mg/L. 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 (49 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 7.6 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 0.79 mg/L. Within the recommended 0.6–1.1 mg/L range for dental health.
Chlorine
Disinfection
Chlorine measured at 1.19 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
Wallarah's chlorine level is 1.19 mg/L. An activated carbon jug filter or benchtop unit can noticeably reduce chlorine taste and odour from tap water.
Soft Water Advantage
Wallarah's water is soft at 49 mg/L. You can use less soap and detergent, as it lathers easily with softer water.
Fluoride in Your Water
Fluoride measures 0.79 mg/L in Wallarah. 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 Wallarah?
How hard is the water in Wallarah?
What water utility supplies Wallarah?
Does Wallarah water have fluoride?
What is the water quality score for Wallarah?
What is the population of Wallarah?
Supplier
Water utility
- Utility
- Central Coast Council
- Supply Zone
- Central Coast System
- Data Source
- Central Coast Council — quarterly summary of drinking water quality october december 2024, Quarterly 20summary 20of 20drinking 20water 20quality 20Jul 20 20Sept 202025, annual drinking water quality report 2024 2025
Nearby
Nearby suburbs
Same water utility, similar water quality
Similar Quality
Suburbs with similar water quality
Suburbs scoring between 8.1 and 10.0
Utility reports average the grid — not your home
Wallarah'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.
Related
Explore more
Related pages for Wallarah, NSW
Is tap water safe?
Safety assessment
Water hardness
49 mg/L
Best water filter
Filter recommendations
New South Wales water quality
State coverage
Central Coast Council
Water utility
Compare with Woongarrah
Wallarah vs Woongarrah
Compare with Bushells Ridge
Wallarah vs Bushells Ridge
Compare with Kiar
Wallarah vs Kiar
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 Central Coast Council (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.