1. A low-pressure dosing system requires a pump tank and a network of small-diameter pipes (1 to 2 inches) placed in trenches. The pump tank stores the effluent, and the pump intermittently doses it to the pressurized distribution network. This pressurized system provides a relatively uniform distribution of the wastewater across the land application system. The trenches can be media-filled or constructed with chambers or other products. The trenches serve the purpose of temporarily storing the water until it can be absorbed by the soil.