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The Graton Community Services District (GCSD) wastewater collection and treatment system consists of 2 sewerage lift stations, 6.5 miles of mains. The wastewater treatment plant is located just north of the town of Graton on 20.5 acres of park-like oak woodlands. Sewage is processed using 2 oxidation ponds, 1 settling pond, and 2 storage reservoirs on this recently constructed, state-of-the-art tertiary wastewater treatment plant. 10 acres of the woodlands were planted with redwood trees by volunteers in the community. The redwoods are periodically irrigated with recycled water.

GCSD operates under a National Pollutant Discharge Elimination System (NPDES) permit, issued by the North Coast Regional Water Resources Control Board. This permit and other key information can be found here. The district holds a goal of zero treated water discharged to Atascadero creek, as much as is feasible. This goal is accomplished by utilizing district's lands and neighboring farms for irrigation, recycling the water through the forest and fields while replenishing the region's groundwater table.