Central Metro

Central Metro Drinking Water System

Reporting period: 12 months to 30 June 2020
Approximate number of customers supplied (2016 Census data): 500,000
Central Metro System consists of the processes shown below
Image depicting the water treatment process at Central Metro

Can be supplied by Adelaide Desalination Plant and other Metropolitan water treatment plants.

Water Quality Data for routine samples at Customer Taps
Parameter Units Health Guideline* Aesthetic Guideline* Average Value Health Compliance #
Alkalinitymg/LNGNG45NA
Bicarbonatemg/LNGNG55NA
Calciummg/LNGNG17.1NA
Carbonatemg/LNGNG0NA
Chloridemg/LNG≤ 25066NA
ColourHUNG≤ 15<1NA
E. colicfu/100mL0NGNA100%
Fluoridemg/L≤ 1.5NG0.8100%
Hardnessmg/LNG≤ 20071NA
Ironmg/LNG≤ 0.30.0088NA
Leadmg/L≤ 0.01NG0.0003100%
Magnesiummg/LNGNG7.01NA
Manganesemg/L≤ 0.5≤ 0.10.0007100%
pHpH unitsNG6.5 - 8.57.5NA
Potassiummg/LNGNG2.32NA
Residual Free Chlorinemg/L≤ 5≤ 0.60.4100%
Residual Monochloraminemg/L≤ 5NG<0.1100%
Residual Total Chlorinemg/L≤ 5NG0.5100%
Sodiummg/LNG≤ 18040.3NA
Sulphatemg/LNG≤ 25025.5NA
Total Dissolved Solidsmg/LNG≤ 600220NA
Trihalomethanesµg/L≤ 250NG73100%
TurbidityNTUNG≤ 5<0.1NA
Zincmg/LNG≤ 30.0046NA
Hardness - InternationalPPM or mg/LNGNG71NG
Hardness - English Degrees°eNGNG4.97NG
Hardness - French Degrees°fNGNG7.1NG
Hardness - German Degrees°dHNGNG3.98NG

* Australian Drinking Water Guidelines - 2011 (ADWG).

NA - Not Applicable
NG - No Guideline Value

# Although we aim for 100% compliance, the ADWG recognises that occasional exceedances may occur. Where there are sufficient sample results from a 12 month period, the 95th percentile statistic should be used to determine performance against the guideline value. Any exceedance requires immediate investigation and corrective action as agreed with SA Health.

# Prior to calculating % compliance for health related chemicals individual results are rounded to the same number of significant figures as the guideline value in the ADWG (as prescribed in the ADWG and agreed with SA Health).

Disclaimer: While every effort has been made to ensure the accuracy of the above data, SA Water accepts no liability for and gives no undertakings, guarantees or warranties concerning the use of the data for any purpose.

Tell us what you think

We're always looking for ways to improve our website, and we would appreciate your feedback on this page.

Please note we cannot respond to any comment made here. If you need a response, please contact us.

Was this page useful?
How can we make it better?

  • Major faults

  • Underway

  • Addis St
  • Evanston Park
  • 10/07/2020
  • Water Supply On
  • 10/07/2020 07:57 PM - We are attending to an incident in Evanston Park with no interruption to the water supply. The safety of our crews and customers comes first, and we always aim to minimise inconvenience by restoring services as quickly as we can. Reference Number WO: 07552485.
  • See all major faults

  • Scheduled works

  • Underway
  • Leader Av
  • Toorak Gardens
  • 11/07/2020
  • Temporary Supply Interruption
  • Estimated start time and water supply off: 14/07/2020 09:00 AM
    Estimated restore time and water supply back on: 14/07/2020 06:00 PM

    We’re improving your services and undertaking maintenance work in Toorak Gardens. Sometimes our crews need to temporarily interrupt the water supply to our customers and/or manage traffic while they are working. Temporary traffic management may remain in place until reinstatement of the impacted road is complete. We always aim to minimise inconvenience by restoring services as safely and quickly as we can.


  • See all scheduled works