Notes: All estimates are difference-in-differences estimates for coefficient κt for period t=1 (after the intervention). Standard errors are shown in parentheses. Statistical significance is denoted as follows: *** p<0.01; ** p<0.05; * p<0.1. The specification controls for time and farm fixed effects. The subsamples are as follows: JV1 is furthest north in the Jordan Valley, and represents a set of farms that were mostly unaffected by the Compact since their water supply is independent of the Zarqa system; JV2 and JV3 represent areas where flows of recycled wastewater newly arrived (JV2) and increased substantially (JV3); JV4 represents an area that already had substantial flows of recycled water prior to the investment; Highlands farms, finally, are located along the Zarqa River and also received access to more steady water supply.
1 Measured on a ten point scale (1 = poor; 10 = excellent)