The well has been drilled into an area of low salinity groundwater occurring within the Tertiary limestone aquifer at Karte, north-west of Pinnaroo. A 48-hour well test was carried out at an average pumping rate of 2600 m3/day (23,800 gals/hr), and results indicate that the required amount of 6300 m3/day (57,750 gals/hr) should be obtainable from the well. This final production rate should be reached gradually, to minimise the risk of hole collapse. Chemical analyses of the water show that its salinity (average 1450 mg/1 TDS) and other properties should make it suitable for lucerne irrigation, but it is recommended that further advice be obtained on this matter from the South Australian Department of Agriculture. Regular samples should be taken to check for any increase in salinity during the life of the well. Regional effects of the intended pumping are likely to be negligible outside a radius of 2 km from the well, but reappraisal of the situation should be made after the well has been in operation for a while. Data from the underlying aquifer show that it is unlikely to be recharging the Tertiary limestone in the Karte area, as was originally thought.