You can find non-potable rinse water at the Geraldton Visitor Centre carpark, located next to McDonald's. To get there, head northwest from the carpark towards Chapman Road for 70 meters. Then, turn left onto Chapman Road and continue straight onto Lester Avenue for 350 meters. At the roundabout, take the second exit to stay on Lester Avenue for 200 meters. Finally, at the next roundabout, take the first exit onto Marine Terrace. After 140 meters, turn right at Francis Street. The rinse water is available at the intersection of Francis Street and Marine Terrace.