The District operates two water treatment plants, 19 water pumping stations, two wastewater treatment plants, 21 wastewater pumping stations, 20 reservoir tanks and several hundred miles of pipelines.

Administrative/Engineering Offices
28200 State Hwy 189
Lake Arrowhead, California
Phone (909) 336-7100
Fax (909) 337-3145

Cedar Glen Water Treatment Plant
201 Cumberland
Lake Arrowhead, California 92352

Bernina Water Treatment Plant
27166 Bernina Drive
Lake Arrowhead, California 92352

Willow Creek Maintenance Facility/Board Room
840 Willow Creek Road
Lake Arrowhead, California 92352

Grass Valley Wastewater Treatment Plant
1 Pilot Rock Road
Lake Arrowhead, California 92352

Willow Creek Wastewater Treatment Plant/Laboratory
2000 Alberta
Lake Arrowhead, California 92352

Percolation Farm
Hesperia, California