Brisbane Water Analysis

The table below table shows the full results of water analyses commissioned by BABBs in March 2019. Note that the City and West sources come from the same source, while the Cleveland, Northgate, and Rochedale South all come from separate reservoirs. There is quite an amount of variation in metals across samples from the City and West region, likely due to different local plumbing materials.

Brisbane water is treated with both Chlorine and Chloramine. Chlorine will evaporate or boil of quite easily. Chloramine must be either neutralised with Campden or filtered by slowly passing water through a carbon filter. If not dealt with chlorines will react with phenols in malt to produce chlorophenols. These are detectible as a plasticky taste in just a few parts-per-billion in finished beer!

Too many numbers? Here are the numbers you need for your brewing software in the central and west Brisbane areas:

Calcium (Ca) 26, Magnesium (Mg) 15, Sodium (Na) 44, Potassium (K) 3, Iron (Fe) 0, Bicarbonate (HC03) 117.1, Carbonate (C03) 0, Sulphate (S04) 25, Chloride (Cl) 73. Many of our members use and recommend the Bru’N Water water chemistry calculator. See Nick’s water tips for more information.

See the map below for the source of samples in relation to Brisbane reservoirs.

Location>AverageCoorparooStaffordSalisburyKenmoreWoolongabbaMiltonHolland ParkSeventeen Mile RocksThe GapClevelandNorthgateRochedale SouthHome RO System
pH by PC TitratorpH ValuepH Unit7.697.767.617.677.747.787.77.617.717.657.427.617.226.31
Alkalinity by PC TitratorTotal Alkalinity as CaCO3mg/L9696959795989796979656889211
Dissolved Major CationsCalciummg/L26272626262525262625212427<1
Dissolved Major CationsMagnesiummg/L1516161515151515151441214<1
Dissolved Major CationsSodiummg/L444646454444434443422239423
Dissolved Major CationsPotassiummg/L3444333333133<1
Dissolved Metals by ICP-MSIronmg/L0.00<0.05<0.05<0.05<0.05<0.05<0.05<0.05<0.05<0.05<0.05<0.05<0.05<0.05
Sulfate (Turbidimetric) as SO4 2- by DASulfate as SO4 - Turbidimetricmg/L25262626252526262324122524<1
Chloride by Discrete AnalyserChloridemg/L737373737372747474744062724
[Most brewers can stop here]
Total Hardness as CaCO3Total Hardness as CaCO3mg/L12713313112712712412412712712069109125<1
Calcium Hardness as CaCO3Calcium Hardness as CaCO3mg/L64676565656262656562526067<1
Magnesium Hardness as CaCO3Magnesium Hardness as CaCO3mg/L62666662626262626258164958<1
Residual AlkaliResidual Alkalimeq/L-0.6-0.7-0.7-0.6-0.6-0.5-0.5-0.6-0.6-0.5-0.2-0.4-0.70.2
Dissolved Metals by ICP-MSAluminiummg/L0.<0.01
Dissolved Metals by ICP-MSCoppermg/L0.0610.120.0080.0280.0280.2560.0030.0560.0170.0350.0170.0480.14<0.001
Dissolved Metals by ICP-MSZincmg/L0.0250.05<0.0050.0120.0070.128<0.0050.028<0.005<0.0050.010.0060.4820.014
Ionic BalanceTotal Anionsmeq/L4.54.524.54.544.484.514.574.554.
Ionic BalanceTotal Cationsmeq/L4.54.774.724.594.524.474.434.524.484.32.363.964.40.13
Ionic BalanceIonic Balance%1.212.682.370.580.50.411.530.

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