2010/22 – South Ayr. Iron, Plasticisers etc

South Ayr (Qld) – Iron

2021/2022: South Ayr (Qld) – Iron 1mg/L (max), 0.224mg/L (mean/av.)

Based on aesthetic considerations (precipitation of iron from solution and taste),
the concentration of iron in drinking water should not exceed 0.3 mg/L.
No health-based guideline value has been set for iron.

Iron has a taste threshold of about 0.3 mg/L in water, and becomes objectionable above 3 mg/L. High iron concentrations give water an undesirable rust-brown appearance and can cause staining of laundry and plumbing fittings, fouling of ion-exchange softeners, and blockages in irrigation systems. Growths of iron bacteria, which concentrate iron, may cause taste and odour problems and lead to pipe restrictions, blockages and corrosion. ADWG 2011

South Ayr Raw Water Quality 2010-2020

N-Butylbenzenesulfonamide 2.9ug/L (max)

N-Butyl benzenesulfonamide (NBBS), a plasticizer used commercially in the polymerization of polyamide compounds. It is neurotoxic and has been found to induce spastic myelopathy in rabbits.

Low levels of PFAS and Pesticides also detected