1. Seattle Water Department
13510 Carnation Duvall Rd NE, Duvall, WA 98019
Coordinate: 47.71997,-121.98568
Phone: (425) 788-1074
2. Lake Margaret Water System
19436 327th Ave NE, Duvall, WA 98019
Coordinate: 47.76543,-121.90003
Phone: (425) 844-2193