Rand Water | Integrated Annual Report 2025

Compliance report for organic contaminants assessment in Rand Water drinking water supply value chain: 2024/25 FY Organic contaminants Unit of Measure Guidelines Limit Analysing laboratory Reporting Limit No. results Achieved compli ance level (%) Limit Source Value Units Dinoseb mg/L 0,008 AG M&L <5 µg/l 31 100% Diuron mg/L 0,02 AG M&L <5 µg/l 31 100% Endosulfan I ng/l 20x10 3 AG RW <45 ng/l 31 100% Endosulfan II ng/l 20x10 3 RW RW <40 ng/l 31 100% Endosulfan sulfate ng/l 1000 WHO RW <50 ng/l 31 100% Endrin ng/l 600 RW RW <30 ng/l 31 100% Endrin aldehyde ng/l 2000 RW RW <40 ng/l 31 100% Endrin ketone ng/l 2000 AG RW <25 ng/l 31 100% Fenamiphos mg/L 0,0005 AG M&L <5 µg/l 31 100% g-BHC (Lindane) ng/l 200 USEPA RW <25 ng/l 31 100% Glyphosate mg/l 1 AG M&L <20 µg/l 31 100% Heptachlor ng/l 400 USEPA RW <30 ng/l 31 100% Heptachlor epoxide ng/l 200 USEPA RW <25 ng/l 31 100% Hexachlorobenzene ng/l 1000 USEPA RW <35 ng/l 31 100% Hexazinone mg/L 0,4 AG M&L <20 µg/l 31 100% Isoproturon mg/L 0,009 WHO M&L <5 µg/l 31 100% Malathion mg/L 0,07 AG M&L <20 µg/l 31 100% MCPA (2-methyl-4 chlorophenoxyacetic acid) mg/L 0,002 WHO M&L <5 µg/l 31 100% Metaldehyde mg/L 0,02 AG M&L <5 µg/l 31 100% Metalochlor ng/l 10x10 3 WHO RW <35 ng/l 31 100% Methoxychlor ng/l 20x10 3 WHO RW <30 ng/l 31 100% Metribuzin ng/l 10000 MDH RW <30 ng/l 31 100% Molinate mg/L 0,004 AG M&L <5 µg/l 31 100% Monocrotophos mg/L 0,002 AG M&L <5 µg/l 31 100% Oxamyl mg/L 0,007 AG M&L <5 µg/l 31 100% Parathion mg/L 0,02 AG M&L <20 µg/l 31 100% Pendimethalin ng/l 20000 WHO RW <35 ng/l 31 100% Picloram mg/L 0,3 AG M&L <20 µg/l 31 100% p,p-DDD ng/l 1000 WHO RW <35 ng/l 31 100% p,p-DDE ng/l 1000 MDH RW <30 ng/l 31 100% p,p-DDT ng/l 1000 WHO RW <40 ng/l 31 100% Propachlor ng/l 70000 AG RW <30 ng/l 31 100% Propazine ng/l 50000 AG RW <20 ng/l 31 100% Simazine ng/l 2000 WHO RW <35 ng/l 31 100% trans Chlordane ng/l 0,5 AG RW <25 ng/l 31 100% Terbacil mg/L 0,2 AG M&L <20 µg/l 31 100% Terbufos mg/L 0,0009 AG M&L <20 µg/l 31 100%

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Rand Water | Integrated Annual Report 2025