Prior to artificial recharge, nitrate concentrations in pore-water samples collected from the unsaturated zone at YVUZ-1 and YVUZ-2 ranged from 10 to 66 mg/L and 10 to 2,100 mg/L, respectively. Data collected from YVUZ-2 indicate that septage has not migrated deeper than 130 feet below land surface (bls). Monitoring at YVUZ-1 indicates that artificial recharge reached the water table at 360 feet bls in 42 days, for an average velocity of 8.6 feet per day. A total of 1,685 acre-feet of imported water was recharged over five months, resulting in a water-level rise of less than 10 feet beneath the ponds and less than 5 feet beneath the residential area. Nitrate concentrations in samples collected from the unsaturated and saturated zones at YVUZ-1 decreased to less than 12 mg/L and increased to18 mg/L, respectively, in response to the recharge. Continued monitoring will assist water managers in making decisions that will help ensure that the water table remains lower than septage-related high-nitrate zones.