County drinking water records

San Juan County, WA drinking water systems

40 community water systems serve San Juan County, WA, reporting 14,883 people served in all. A system that also serves other counties counts all of its customers here.

7 of them (18%) had at least one health-based violation in the last 10 years. 2 systems still have one unresolved.

29 rely mainly on groundwater and 11 on surface water, counting water bought from other systems.

33 systems filed a lead service line inventory listing 0 lead lines, 2 galvanized lines that must be replaced and 321 lines of unknown material.

1 more system is placed in San Juan County, WA by the county its records name because it has no service area map that lines up with its own records, so it is listed apart and not counted here.

Community water systems: 40
People served, sum of each system's own figure: 14,883
Systems with a health-based violation, last 10 years: 7
Systems with one unresolved: 2
Lead service lines in inventories: 0

Water systems serving San Juan County

40 systems

People served is each system's own figure for its whole service area. Violation counts cover the last 10 years of EPA records.

System	Serves	People served	Main source	Health-based violations, 10 years	Unresolved	Lead lines
Eastsound Water Users Association	Outside cities and towns	3,711	Surface water	1	0	0
Town of Friday Harbor	Friday Harbor and land outside it	3,543	Surface water	0	0	0
Roche Harbor Water System Inc	Roche Harbor and land outside it	2,091	Surface water	0	0	0
Fisherman Bay Water Association	Outside cities and towns	1,195	Groundwater	0	0	0
Rosario	Outside cities and towns	1,031	Surface water	0	0	0
Doe Bay Water Users Assoc	Outside cities and towns	442	Surface water	0	0	0
Olga Water Users Inc	Outside cities and towns	392	Surface water	0	0	0
Orcas Highlands	Outside cities and towns	260	Purchased surface water	0	0	0
West Sound Water Association	Outside cities and towns	206	Groundwater	0	0	0
Cape San Juan Water District	Outside cities and towns	164	Groundwater	13	0	0
Oaks the Mobile Home Park	Outside cities and towns	143	Groundwater	0	1	0
Mackaye Harbor Water District	Outside cities and towns	133	Groundwater	0	0	No inventory
Portland Fair Estates	Outside cities and towns	130	Groundwater	7	0	0
North Lopez Service	Outside cities and towns	114	Groundwater	0	0	0
Spring Point Homeowners Association	Outside cities and towns	85	Surface water	21	0	0
Harbor on Fisherman Bay	Outside cities and towns	84	Groundwater	0	0	0
Limestone Point Water Company Inc	Roche Harbor	81	Groundwater	0	0	0
Mitchell Point Water Assn	Outside cities and towns	81	Surface water	0	0	0
Raccoon Point Water System	Outside cities and towns	81	Groundwater	0	0	0
Sunset Ranch Owners Assoc	Outside cities and towns	76	Purchased groundwater	0	1	No inventory
University Heights	Outside cities and towns	76	Groundwater	0	0	0
Hannah Heights Owners Association	Outside cities and towns	66	Groundwater	0	0	No inventory
Eagle Cove Water Association	Outside cities and towns	65	Groundwater	0	0	0
Cattle Point Water District	Outside cities and towns	63	Surface water	0	0	0
Orcas Island Golf Estates	Outside cities and towns	57	Groundwater	0	0	No inventory
Mineral Heights Association	Outside cities and towns	46	Groundwater	0	0	0
Aleck Bay Park Water System	Outside cities and towns	40	Groundwater	0	0	0
San Juan Fairways Owners Assn	Outside cities and towns	40	Groundwater	1	0	0
Fairway Number Three Water	Outside cities and towns	39	Groundwater	10	0	0
Humphrey Head Owners Assoc	Outside cities and towns	37	Groundwater	0	0	No inventory
E.L.C. Water System	Outside cities and towns	36	Groundwater	8	0	0
Common Field Water System	Outside cities and towns	36	Groundwater	0	0	0
San Juan Ranchos	Outside cities and towns	35	Groundwater	0	0	0
Shoal Bay & Swift Bay Water Assn.	Outside cities and towns	35	Groundwater	0	0	No inventory
Cayou Valley Homeowners Assoc	Outside cities and towns	31	Groundwater	0	0	0
Milagra Water System	Outside cities and towns	31	Groundwater	0	0	0
Smugglers Cove Water System	Outside cities and towns	27	Groundwater	0	0	0
North Forty Property Owners Assn	Outside cities and towns	27	Groundwater	0	0	0
Sunrise Beach Association	Outside cities and towns	27	Groundwater	0	0	0
Salish Sea Water System	Outside cities and towns	26	Surface water	0	0	No inventory

Systems placed by county record in San Juan County

1 system

EPA has no service area map for this system. It is placed by the county its records name (the counties EPA lists it serving, or the county coded in its ID where EPA lists none), and without a map it is not counted in the figures above.

System	Serves	People served	Main source	Health-based violations, 10 years	Unresolved	Lead lines
Hannah Heights #2 Water Users Assn	County on record	44	Groundwater	3	0	0

Cities and towns in San Juan County

2 places

Friday Harbor1 system
Roche Harbor2 systems

Back to Washington

Counties come from the counties EPA lists each system serving, matched to 2024 Census counties; where EPA lists none, from the county coded in the system's ID, its service area map, or its mailing address. A county holding at least a fifth of a system's service area map is added when at least a fifth of that map lies in those counties. Towns are the ones EPA lists and the Census places such a map covers, always inside those counties. In New England, where EPA's town names a whole Town, it is not matched to the village of the same name. A system is not listed in a county holding less than a fifth of its map, or in a county or town its map reaches when the map lies mostly outside the counties EPA lists, so a page can leave out a system that serves part of the area. Methodology and limitations