1994-5: Mulwala (NSW) Murray River. Pesticide: Molinate Center map Traffic Bicycling Transit Get Directions Center map Traffic Bicycling Transit Get Directions Molinate was the most commonly applied herbicide to rice crops in southern New South Wales in 1994-1995. It was detected in irrigation drains after application to rice fields at levels up to 0.7 mg/L (Bowmer et al 1998). Molinate was detected on two occasions in the Mulwala supply offtake on the Murray river, at 0.0072 and 0.0005 mg/L (7.2 and 0.5 μg/L). Over a 55-day period of monitoring supply water in the irrigated areas, molinate was found in 90% of the analysed samples, with a maximum concentration of 0.0036 mg/L (3.6 μg/L) (Bowmer et al 1998). The high frequency of molinate detection was due to samples being taken in early summer, when the herbicide is used in rice crops. https://www.nhmrc.gov.au/guidelines-publications/eh52