Central Metro

Central Metro Drinking Water System

Reporting period: 12 months to 01 April 2019
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/LNGNG51NA
Bicarbonatemg/LNGNG62NA
Calciummg/LNGNG22NA
Carbonatemg/LNGNG0NA
Chloridemg/LNG≤ 25092NA
ColourHUNG≤ 151NA
E. colicfu/100mL0NGNA99.90%
Fluoridemg/L≤ 1.5NG0.8100%
Hardnessmg/LNG≤ 200102NA
Ironmg/LNG≤ 0.30.0084NA
Lead - Totalmg/L≤ 0.01NG0.0003100%
Magnesiummg/LNGNG11.44NA
Manganesemg/L≤ 0.5≤ 0.1< 0.001100%
pHpH unitsNG6.5 - 8.57.3NA
Potassiummg/LNGNG3.93NA
Residual Free Chlorinemg/L≤ 5≤ 0.60.4100%
Residual Monochloraminemg/L≤ 5NG<0.1100%
Residual Total Chlorinemg/L≤ 5≤ 0.60.5100%
Sodiummg/LNG≤ 18051.5NA
Sulphatemg/LNG≤ 25042.2NA
Total Dissolved Solidsmg/LNG≤ 600283NA
Trihalomethanesµg/L≤ 250NG122100%
TurbidityNTUNG≤ 50.09NA
Zincmg/LNG≤ 30.005NA
Hardness - InternationalPPM or mg/LNGNG102NG
Hardness - English Degrees°eNGNG7.14NG
Hardness - French Degrees°fNGNG10.2NG
Hardness - German Degrees°dHNGNG5.71NG

* 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

  • Reported

  • Gawler Pl
  • Adelaide
  • 23/04/2019
  • Water Supply Interrupted
  • Last Updated: 23/04/2019 10:37 AM - We are on site in Adelaide and the nearby water supply may be unavailable until 23/04/2019 03:20 PM. Sometimes our crews need to temporarily interrupt the water supply to our customers and/or manage traffic while they are working. We always aim to minimise inconvenience by restoring supply as safely and quickly as we can. Reference Number WO: 06900473.
  • See all major faults

  • Scheduled works

  • Underway
  • Ayers St
  • Gawler East
  • 18/03/2019
  • Temporary Supply Interruption
  • Estimated start time and water supply off: 22/03/2019 09:00 AM
    Estimated restore time and water supply back on: 22/03/2019 06:00 PM

    We’re improving your services and undertaking maintenance work in Gawler East. 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

Follow Us On