Shelter Bay Community owns and operates a private water distribution system. Water is supplied through a single 8-inch water main from the Town of La Conner to the east. La Conner receives its water from the Anacortes Transmission main, which supplies treated Skagit River water. In the 2011 Water Supply Agreement with the Town of La Conner, an annual volume of 75 million gallons per year is committed to Shelter Bay. The Town of La Conner is not obligated to provide fire flows to Shelter Bay, should their ability to provide normal service to their other customers on their distribution grid be compromised in such a situation. There is also a manually-operated intertie with the Swinomish Indian Tribal Community’s water distribution system to the north, which can either supply or receive water. Shelter Bay also supplies/purveys water to the Eagle’s Nest Community.
Shelter Bay operates its own sanitary sewer system, comprised of a network of buried piping for wastewater collection and an on-site wastewater treatment plant (WWTP). There is a network of sewer collection piping and four lift stations located in various places in Shelter Bay. The lift stations augment the power of gravity to pump the sewage to the treatment plant. The collection system serves 870 connections and has a total of 56,921 lineal feet (approximately 11 miles) of 8″, 10″, 12″, and 15″ gravity collection piping. The collection system was originally constructed in the early 1970’s