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Flood releases commenced from North Pine Dam – 11:00pm, 22/10/2026

AFFECTED - North Pine (Lake Samsonvale)

LAST UPDATED - 23/10/2026 - 00:10

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Image Flat WTP - Sunshine Coast

September 2026 - Site Performance

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Parameter Unit of measure ADWG criteria Number of samples Minimum Average Maximum Number that passed Number that failed
Health Parameters (note that copper and manganese have both health and aesthetic guideline values)
  Chemicals Expand
Fluoride mg/L <= 1.5 8 0.07 0.62 0.79 8 0
Free Chlorine - Field mg/L <= 5 8 1.3 1.9 2.2 8 0
Total Chlorine - Field mg/L <= 5 8 1.4 2.1 2.5 8 0
  Metals Expand
Arsenic mg/L <= 0.01 2 <0.0005 <0.0005 <0.0005 2 0
Boron mg/L <= 4 2 <0.03 <0.03 <0.03 2 0
Cadmium mg/L <= 0.002 2 <0.0001 <0.0001 <0.0001 2 0
Chromium mg/L <= 0.05 2 <0.001 <0.001 <0.001 2 0
Copper mg/L <= 2 2 <0.001 <0.001 <0.001 2 0
Lead mg/L <= 0.005 2 <0.001 <0.001 <0.001 2 0
Manganese mg/L <= 0.1 2 <0.001 0.001 0.002 2 0
Nickel mg/L <= 0.02 2 <0.001 <0.001 <0.001 2 0
Selenium mg/L <= 0.004 2 <0.002 <0.002 <0.002 2 0
  Microbiological Expand
E.coli MF CFU/100mL < 1 8 <1.0 <1.0 <1.0 8 0
  Trihalomethanes Expand
Trihalomethanes µg/L <= 250 8 12.0 31.1 58.0 8 0
Aesthetic Parameters
  Major Cations & Anions Expand
Chloride mg/L <= 250 2 33.0 33.0 33.0 2 0
Hardness mg/L <= 200 2 61.0 61.5 62.0 2 0
Sodium mg/L <= 180 2 22.0 22.0 22.0 2 0
Sulphate mg/L <= 250 2 40.0 40.0 40.0 2 0
  Metals Expand
Aluminium mg/L <= 0.2 2 0.007 0.007 0.007 2 0
Copper mg/L <= 1 2 <0.001 <0.001 <0.001 2 0
Iron mg/L <= 0.3 2 <0.01 <0.01 <0.01 2 0
Manganese mg/L <= 0.05 2 <0.001 0.001 0.002 2 0
Zinc mg/L <= 3 2 <0.005 <0.005 <0.005 2 0
  Physical Properties Expand
pH - Field pH Unit 6.5 - 8.5 8 7.0 7.1 7.2 8 0
Total Dissolved Solids mg/L <= 600 2 200.0 205.0 210.0 2 0
True Colour HU <= 15 2 <1.0 <1.0 1.0 2 0
Turbidity NTU <= 5 2 0.2 0.2 0.2 2 0
Other Parameters
  Major Cations & Anions Expand
Calcium mg/L N/A 2 11.0 11.5 12.0 N/A N/A
Magnesium mg/L N/A 2 8.00 8.00 8.00 N/A N/A
Potassium mg/L N/A 2 <1.0 <1.0 <1.0 N/A N/A
  Physical Properties Expand
Alkalinity mg/L N/A 2 49.0 51.0 53.0 N/A N/A
Conductivity - Field µS/cm N/A 8 288.0 302.1 334.0 N/A N/A
Temperature - Field °C N/A 8 18.8 20.4 21.4 N/A N/A
  Tastes and Odours Expand
2-Methylisoborneol ng/L N/A 8 <2.0 <2.0 <2.0 N/A N/A
Geosmin ng/L N/A 8 <2.0 <2.0 <2.0 N/A N/A

Image Flat WTP - Sunshine Coast

September 2026 - Site Performance

Download Report
Health Parameters (note that copper and manganese have both health and aesthetic guideline values)
 Chemicals Expand
  • Fluoride
    Unit of measure:mg/L
    ADWG criteria:<= 1.5
    Number of samples:8
    Minimum:0.07
    Average:0.62
    Maximum:0.79
    Number that passed:8
    Number that failed:0
  • Free Chlorine - Field
    Unit of measure:mg/L
    ADWG criteria:<= 5
    Number of samples:8
    Minimum:1.3
    Average:1.9
    Maximum:2.2
    Number that passed:8
    Number that failed:0
  • Total Chlorine - Field
    Unit of measure:mg/L
    ADWG criteria:<= 5
    Number of samples:8
    Minimum:1.4
    Average:2.1
    Maximum:2.5
    Number that passed:8
    Number that failed:0
 Metals Expand
  • Arsenic
    Unit of measure:mg/L
    ADWG criteria:<= 0.01
    Number of samples:2
    Minimum:<0.0005
    Average:<0.0005
    Maximum:<0.0005
    Number that passed:2
    Number that failed:0
  • Boron
    Unit of measure:mg/L
    ADWG criteria:<= 4
    Number of samples:2
    Minimum:<0.03
    Average:<0.03
    Maximum:<0.03
    Number that passed:2
    Number that failed:0
  • Cadmium
    Unit of measure:mg/L
    ADWG criteria:<= 0.002
    Number of samples:2
    Minimum:<0.0001
    Average:<0.0001
    Maximum:<0.0001
    Number that passed:2
    Number that failed:0
  • Chromium
    Unit of measure:mg/L
    ADWG criteria:<= 0.05
    Number of samples:2
    Minimum:<0.001
    Average:<0.001
    Maximum:<0.001
    Number that passed:2
    Number that failed:0
  • Copper
    Unit of measure:mg/L
    ADWG criteria:<= 2
    Number of samples:2
    Minimum:<0.001
    Average:<0.001
    Maximum:<0.001
    Number that passed:2
    Number that failed:0
  • Lead
    Unit of measure:mg/L
    ADWG criteria:<= 0.005
    Number of samples:2
    Minimum:<0.001
    Average:<0.001
    Maximum:<0.001
    Number that passed:2
    Number that failed:0
  • Manganese
    Unit of measure:mg/L
    ADWG criteria:<= 0.1
    Number of samples:2
    Minimum:<0.001
    Average:0.001
    Maximum:0.002
    Number that passed:2
    Number that failed:0
  • Nickel
    Unit of measure:mg/L
    ADWG criteria:<= 0.02
    Number of samples:2
    Minimum:<0.001
    Average:<0.001
    Maximum:<0.001
    Number that passed:2
    Number that failed:0
  • Selenium
    Unit of measure:mg/L
    ADWG criteria:<= 0.004
    Number of samples:2
    Minimum:<0.002
    Average:<0.002
    Maximum:<0.002
    Number that passed:2
    Number that failed:0
 Microbiological Expand
  • E.coli MF
    Unit of measure:CFU/100mL
    ADWG criteria:< 1
    Number of samples:8
    Minimum:<1.0
    Average:<1.0
    Maximum:<1.0
    Number that passed:8
    Number that failed:0
 Trihalomethanes Expand
  • Trihalomethanes
    Unit of measure:µg/L
    ADWG criteria:<= 250
    Number of samples:8
    Minimum:12.0
    Average:31.1
    Maximum:58.0
    Number that passed:8
    Number that failed:0
Aesthetic Parameters
 Major Cations & Anions Expand
  • Chloride
    Unit of measure:mg/L
    ADWG criteria:<= 250
    Number of samples:2
    Minimum:33.0
    Average:33.0
    Maximum:33.0
    Number that passed:2
    Number that failed:0
  • Hardness
    Unit of measure:mg/L
    ADWG criteria:<= 200
    Number of samples:2
    Minimum:61.0
    Average:61.5
    Maximum:62.0
    Number that passed:2
    Number that failed:0
  • Sodium
    Unit of measure:mg/L
    ADWG criteria:<= 180
    Number of samples:2
    Minimum:22.0
    Average:22.0
    Maximum:22.0
    Number that passed:2
    Number that failed:0
  • Sulphate
    Unit of measure:mg/L
    ADWG criteria:<= 250
    Number of samples:2
    Minimum:40.0
    Average:40.0
    Maximum:40.0
    Number that passed:2
    Number that failed:0
 Metals Expand
  • Aluminium
    Unit of measure:mg/L
    ADWG criteria:<= 0.2
    Number of samples:2
    Minimum:0.007
    Average:0.007
    Maximum:0.007
    Number that passed:2
    Number that failed:0
  • Copper
    Unit of measure:mg/L
    ADWG criteria:<= 1
    Number of samples:2
    Minimum:<0.001
    Average:<0.001
    Maximum:<0.001
    Number that passed:2
    Number that failed:0
  • Iron
    Unit of measure:mg/L
    ADWG criteria:<= 0.3
    Number of samples:2
    Minimum:<0.01
    Average:<0.01
    Maximum:<0.01
    Number that passed:2
    Number that failed:0
  • Manganese
    Unit of measure:mg/L
    ADWG criteria:<= 0.05
    Number of samples:2
    Minimum:<0.001
    Average:0.001
    Maximum:0.002
    Number that passed:2
    Number that failed:0
  • Zinc
    Unit of measure:mg/L
    ADWG criteria:<= 3
    Number of samples:2
    Minimum:<0.005
    Average:<0.005
    Maximum:<0.005
    Number that passed:2
    Number that failed:0
 Physical Properties Expand
  • pH - Field
    Unit of measure:pH Unit
    ADWG criteria:6.5 - 8.5
    Number of samples:8
    Minimum:7.0
    Average:7.1
    Maximum:7.2
    Number that passed:8
    Number that failed:0
  • Total Dissolved Solids
    Unit of measure:mg/L
    ADWG criteria:<= 600
    Number of samples:2
    Minimum:200.0
    Average:205.0
    Maximum:210.0
    Number that passed:2
    Number that failed:0
  • True Colour
    Unit of measure:HU
    ADWG criteria:<= 15
    Number of samples:2
    Minimum:<1.0
    Average:<1.0
    Maximum:1.0
    Number that passed:2
    Number that failed:0
  • Turbidity
    Unit of measure:NTU
    ADWG criteria:<= 5
    Number of samples:2
    Minimum:0.2
    Average:0.2
    Maximum:0.2
    Number that passed:2
    Number that failed:0
Other Parameters
 Major Cations & Anions Expand
  • Calcium
    Unit of measure:mg/L
    ADWG criteria:N/A
    Number of samples:2
    Minimum:11.0
    Average:11.5
    Maximum:12.0
    Number that passed:N/A
    Number that failed:N/A
  • Magnesium
    Unit of measure:mg/L
    ADWG criteria:N/A
    Number of samples:2
    Minimum:8.00
    Average:8.00
    Maximum:8.00
    Number that passed:N/A
    Number that failed:N/A
  • Potassium
    Unit of measure:mg/L
    ADWG criteria:N/A
    Number of samples:2
    Minimum:<1.0
    Average:<1.0
    Maximum:<1.0
    Number that passed:N/A
    Number that failed:N/A
 Physical Properties Expand
  • Alkalinity
    Unit of measure:mg/L
    ADWG criteria:N/A
    Number of samples:2
    Minimum:49.0
    Average:51.0
    Maximum:53.0
    Number that passed:N/A
    Number that failed:N/A
  • Conductivity - Field
    Unit of measure:µS/cm
    ADWG criteria:N/A
    Number of samples:8
    Minimum:288.0
    Average:302.1
    Maximum:334.0
    Number that passed:N/A
    Number that failed:N/A
  • Temperature - Field
    Unit of measure:°C
    ADWG criteria:N/A
    Number of samples:8
    Minimum:18.8
    Average:20.4
    Maximum:21.4
    Number that passed:N/A
    Number that failed:N/A
 Tastes and Odours Expand
  • 2-Methylisoborneol
    Unit of measure:ng/L
    ADWG criteria:N/A
    Number of samples:8
    Minimum:<2.0
    Average:<2.0
    Maximum:<2.0
    Number that passed:N/A
    Number that failed:N/A
  • Geosmin
    Unit of measure:ng/L
    ADWG criteria:N/A
    Number of samples:8
    Minimum:<2.0
    Average:<2.0
    Maximum:<2.0
    Number that passed:N/A
    Number that failed:N/A

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Seqwater acknowledges the Traditional Custodians of the land, catchments and waterways on which we live, work and dream – the Kabi Kabi First Nations peoples; the Jinibara peoples; the Turrbal peoples from the northside of the river and the Jagera peoples of the south side of the river; the Quandamooka peoples; the Danggan Balun peoples; the Yuggera Ugarapul peoples; and the Gold Coast Native Title Group.

We pay our respects to Elders past, present and emerging.

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