Skagit PUD operates the most comprehensive water system in the county, with over 27,500 installed services. Most of the PUD's services are within the Judy Reservoir System (PWSID 79500E), which serves the cities of Burlington, Mount Vernon, and Sedro-Woolley, surrounding rural and suburban areas.

Water Systems

Skagit PUD also operates seven remote water systems, which include the following:

Alger (PWSID 01400 K)

The Alger system includes a groundwater well, a manganese filtration system, 4.9 miles of 4-inch, 6-inch, 8-inch, 12-inch, and 16-inch water mains, and 132,000 gallons of distribution storage capacity. The system has a capacity for up to 219 Equivalent Residential Units. The District accepted ownership of the system in 1999.

Cedargrove (PWSID 11917 4)

The Cedargrove system includes a groundwater well, an iron and manganese filtration system, 2.9 miles of 4-inch, 6-inch, 8-inch, and 10-inch ductile iron water mains, and 270,000 gallons of distribution storage capacity. The system has a capacity for up to 466 ERUs. The PUD accepted ownership of the system in 1992.

Marblemount (PWSID AA642)

The Marblemount system includes a groundwater well, 1.9 miles of 8-inch water mains, and 64,000 gallons of distribution storage capacity. The system is approved for a maximum of ERUs. The District accepted ownership of the system in 2007

Potlatch Beach (PWSID 69034 L)

The Potlatch Beach water system on Guemes Island includes one mile of 2- and 4-inch plastic water mains and has 30,000 gallons of distribution storage capacity. The system was experiencing saltwater intrusion in its groundwater well before PUD ownership, so the PUD replaced the source with a new reverse osmosis water treatment system, supplying the water system with desalinated water from 

Guemes Channel in the Puget Sound. The system has a capacity for up to 182 ERUs. The PUD accepted ownership of the system in 1998.