Leavitt Lake Evaporation Ponds - Lassen County, California Wastewater Treatment

Leavitt Lake Evaporation Ponds is a wastewater treatment facility located in Lassen County, California, serving a small population of 950 residents. The plant operates as part of the municipal wastewater infrastructure for the area, managing effluent through evaporation ponds. The plant provides secondary treatment, which is the standard level required under the US Clean Water Act for facilities of this scale. With a designed capacity and discharge volume of 143.85 million gallons per year, the plant relies on evaporation ponds for effluent disposal, a common approach in arid regions where surface water discharge is not feasible. The facility's receiving environment is the local groundwater and surrounding arid landscape, as no direct surface water discharge occurs. The plant's location in northeastern California places it within the Great Basin watershed, where water resources are scarce and evaporation ponds help minimize environmental impact on downstream ecosystems.

The plant is situated in the Great Basin region, a closed hydrological basin where water does not drain to the ocean. Evaporation ponds prevent direct discharge to surface waters, protecting local groundwater quality. The surrounding area supports sagebrush steppe and seasonal wetlands, which are sensitive to changes in water chemistry and salinity. Proper management of the ponds is essential to avoid contaminating the shallow aquifer that sustains local wildlife and vegetation.