13/2/20: Brisbane Airport – Lead
On the 21st February BAC received notification from SAS laboratory, an exceedance for Lead was detected in a routine water sample taken on the 13th February 2020. Sample location 20/03173/9 TAR site returned the exceedance of 0.012mg/l of lead above the limit of 0.01mg/l. SAS laboratory notified BAC Utilities Engineer via phone and email. Flushing of the line was undertaken via the adjacent fire hydrants, with re sampling taking place. The secondary sample returned a result of 0.0020mg/l. The exceedance was reported to the department via phone then submission of WSR0017 21/02/2020
Lead Australian Drinking Water Guideline 0.01mg/L
“… Lead can be present in drinking water as a result of dissolution from natural sources, or from household plumbing systems containing lead. These may include lead in pipes, or in solder used to seal joints. The amount of lead dissolved will depend on a number of factors including pH, water hardness and the standing time of the water.
Lead is the most common of the heavy metals and is mined widely throughout the world. It is used in the production of lead acid batteries, solder, alloys, cable sheathing, paint pigments, rust inhibitors, ammunition, glazes and plastic stabilisers. The organo-lead compounds tetramethyl and tetraethyl lead are used extensively as anti-knock and lubricating compounds in gasoline…ADWG 2011