County · Washington

Island County, Washington: drinking water records

Name: Drinking water records for Island County, Washington
Creator: U.S. Environmental Protection Agency
License: https://www.usa.gov/government-works

Explore EPA records for 234 community water systems across 8 ZIP codes in Island County, then find water-testing resources and available recent monitoring-station readings.

In focus234Community water systems

Public records. Clearer context.

Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages

Drinking-water records

EPA survey and compliance records are historical reports. UCMR 5 results are available for 5 of the 234 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.

systems in EPA's PFAS survey

systems where PFAS was found

systems at or above the PFOA or PFOS limit, on the yearly-average basis EPA uses

systems that have reached the lead action level

systems with a health-based violation since 2016

System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.

Water systems in this county

All 234 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.

Water system	People served	PFAS survey results	PFAS found	Health-based violations	Lead, 9 in 10 homes at or below
Oak Harbor City of WA5362650	23,675	120	0	0	1.2 ppbbelow the action level
Naval Air Station/Whidbey Island WA5303420	16,595	120	0	0	3.4 ppbbelow the action level
Coupeville Town of WA5315550	4,142	60	7	0	3.5 ppbbelow the action level
Langley City of WA5345950	1,416	0	0	1	1.9 ppbbelow the action level
Scatchet Head Water District WA5376470	900	0	0	1	1.1 ppbbelow the action level
Rolling Hills-Glencairn WA5374000	872	0	0	8	2.1 ppbbelow the action level
Lost Lake Property Owners Assn WA5348345	736	60	0	0	2.4 ppbbelow the action level
Vistaire Water System WA5357414	647	0	0	1	3.3 ppbbelow the action level
Saratoga Water District WA5376300	477	0	0	10	1.1 ppbbelow the action level
Penn Cove Water and Sewer District WA5366950	460	0	0	19	1.7 ppbbelow the action level
Whidbey West Water Assoc. WA5336314	415	0	0	11	2.2 ppbbelow the action level
Sierra Country Club WA5378975	400	0	0	9	1.5 ppbbelow the action level
Goss Lake Park Community WA5328575	285	0	0	3	4.8 ppbbelow the action level
Shirona Water System WA5378373	243	0	0	1	5.5 ppbbelow the action level
Hide-Away Water Company INC WA5366586	240	0	0	3	2.5 ppbbelow the action level
Driftwood Shores Water System INC WA5320000	222	0	0	1	0.9 ppbbelow the action level
Harris Custer Estates Water Assn WA5317035	194	0	0	1	0.9 ppbbelow the action level
Long Point Water Company INC WA5348050	182	0	0	1	1 ppbbelow the action level
Pine Terrace Water Association WA5367600	181	0	0	1	0.8 ppbbelow the action level
Arrowhead Beach Coop Water Assoc WA5303000	167	0	0	18	2.1 ppbbelow the action level
Parklane Water Association WA5366204	127	0	0	1	0.8 ppbbelow the action level
Campo Hacienda WA5310992	123	0	0	2	2.5 ppbbelow the action level
Sunset Development Comm Club WA5386075	92	0	0	1	48.9 ppbat or above the action level
Beachwood Water Company WA5304980	90	0	0	9	1.1 ppbbelow the action level
Deer Lake Haven INC WA5318450	90	0	0	2	2.9 ppbbelow the action level
Olympic Marine View Water Assoc WA5363480	89	0	0	2	0 ppbbelow the action level
Summerland WA5384903	85	0	0	4	0 ppbbelow the action level
Devries Road Community Assn WA5315948	76	0	0	34	0 ppbbelow the action level
Eastgate WA5322030	76	0	0	12	4.1 ppbbelow the action level
Ridgeview Estates Community Assn. WA5326791	75	0	0	21	0 ppbbelow the action level
Sunset West WA5361761	75	0	0	1	4.7 ppbbelow the action level
Parkwood WA5323191	65	0	0	3	105 ppbat or above the action level
Campbells Glen WA5310988	62	0	0	17	1.2 ppbbelow the action level
Suburban Mobile Park WA5384730	60	0	0	1	3.1 ppbbelow the action level
Beverly Beach Improvement Club WA5306147	56	0	0	15	3.8 ppbbelow the action level
Bonnie View Water WA5307700	50	0	0	13	19.5 ppbat or above the action level
Taylor Road Water System WA5387195	50	0	0	4	3.5 ppbbelow the action level
Camano Sunset Water System WA5326951	47	0	0	14	6.6 ppbbelow the action level
Briarwood Water System WA5308324	44	0	0	3	8.7 ppbbelow the action level
Camano Island Summit Assoc. WA5308344	42	0	0	1	0 ppbbelow the action level
Township 29 Water Association WA5300484	42	0	0	14	2.2 ppbbelow the action level
Woodglen Prd Water System WA5306529	40	0	0	13	6.6 ppbbelow the action level
Seawest Water System WA5337544	38	0	0	3	12.2 ppbbelow the action level
Maple Hill Park WA5309356	35	0	0	6	1.6 ppbbelow the action level
Georgetown Water Association WA5312636	32	0	0	1	0 ppbbelow the action level
Seascape Water Association WA5307095	28	60	0	0	0 ppbbelow the action level
Camano Water Association WA5310750	2,592	0	0	0	1 ppbbelow the action level
Clinton Water District WA5313900	1,980	0	0	0	9.8 ppbbelow the action level
Harbor Hills Community Water System WA5333860	1,373	0	0	0	3 ppbbelow the action level
Freeland Water and Sewer District WA5326450	1,264	0	0	0	0 ppbbelow the action level
W&b Waterworks 1 WA5346670	1,112	0	0	0	1.3 ppbbelow the action level
Camano Co-Op Water & Power Co WA5310600	1,071	0	0	0	9.5 ppbbelow the action level
Bayview Beach Water District WA5305535	1,035	0	0	0	1.5 ppbbelow the action level
Admirals Cove Water District WA5300410	870	0	0	0	1 ppbbelow the action level
Camaloch Association WA5310580	825	0	0	0	4 ppbbelow the action level
Hillcrest Village Water Co INC WA5333150	770	0	0	0	0 ppbbelow the action level
Northgate Terrace Community Club WA5361750	750	0	0	0	0 ppbbelow the action level
Mecca Community Association WA5322888	619	0	0	0	0 ppbbelow the action level
Camano Vista Water District WA5310748	591	0	0	0	0.7 ppbbelow the action level
North Whidbey Water District WA5361603	568	0	0	0	0.8 ppbbelow the action level
Sandy Hook Yacht Club Estates WA5376050	540	0	0	0	0.6 ppbbelow the action level
Madrona Beach Comm Water System WA5349954	539	0	0	0	0.7 ppbbelow the action level
Sunvista Sunlight Beach HOA WA5385160	500	0	0	0	8.6 ppbbelow the action level
Sea View Water LLC WA5377148	496	0	0	0	1.7 ppbbelow the action level
Lagoon Point Water District WA5343550	495	0	0	0	1.3 ppbbelow the action level
Dugualla Community INC WA5320250	459	0	0	0	0.8 ppbbelow the action level
Combined Water System WA5305795	435	0	0	0	1.4 ppbbelow the action level
Saratoga Beach Owners Assn WA5376240	425	0	0	0	0 ppbbelow the action level
Silver Lake Water WA5379245	425	0	0	0	0 ppbbelow the action level
Crosswoods Water System WA5316274	420	0	0	0	0 ppbbelow the action level
Crockett Lake Water District WA5316256	325	0	0	0	4.2 ppbbelow the action level
Rocky Point Community Club WA5304629	320	0	0	0	1 ppbbelow the action level
Swantown Water District WA5396042	318	0	0	0	1.7 ppbbelow the action level
Beachcomber H2o Co WA5304979	310	0	0	0	0 ppbbelow the action level
Camano Laguna Vista Water Assoc WA5310725	310	0	0	0	0 ppbbelow the action level
Parkwood Manor MHP WA5366218	301	0	0	0	3.7 ppbbelow the action level
Mariners Cove Beach Club INC WA5351730	300	0	0	0	0.9 ppbbelow the action level
Driftwood Heights Association WA5319948	298	0	0	0	0 ppbbelow the action level
New Utsalady Water System INC WA5359200	291	0	0	0	2.9 ppbbelow the action level
Camano Hills Water Company INC WA5301429	286	0	0	0	1 ppbbelow the action level
West Ridge Water System WA5394942	275	0	0	0	0.7 ppbbelow the action level
Green Island Hills Water Assn WA5300429	265	0	0	0	2.9 ppbbelow the action level
Whidbey Shores Water System WA5396070	262	0	0	0	1.2 ppbbelow the action level
Camano City Community Club INC WA5310590	246	0	0	0	1 ppbbelow the action level
Utsalady Heights Owners Assn WA5300982	240	0	0	0	1.7 ppbbelow the action level
Cal Waterworks WA5331040	239	0	0	0	1.2 ppbbelow the action level
Bayview Estates Water Company WA5304956	227	0	0	0	1.2 ppbbelow the action level
Juniper Beach Water District WA5337250	213	0	0	0	0.5 ppbbelow the action level
Baby Island Heights Water Assoc WA5303660	211	0	0	0	0.9 ppbbelow the action level
Tel Company#1 WA5303099	210	0	0	0	0 ppbbelow the action level
Ledgewood Beach Water District WA5346650	202	0	0	0	0 ppbbelow the action level
Buena Vista Community Club WA5309150	200	0	0	0	0.5 ppbbelow the action level
Country Place Mobile Home Park WA5312003	200	0	0	0	0.5 ppbbelow the action level
Polnell Shores Comm Org INC WA5368373	200	0	0	0	0.9 ppbbelow the action level
Sierra Vista Water Association WA5378970	197	0	0	0	1.1 ppbbelow the action level
Honeymoon Lake WA5334005	195	0	0	0	2.7 ppbbelow the action level
Finisterre Heights Water System WA5302145	193	0	0	0	2.2 ppbbelow the action level
Sunrise Hills Community W S WA5385818	186	0	0	0	1.4 ppbbelow the action level
Deception Park View WA5318305	180	0	0	0	2.4 ppbbelow the action level
Onamac Water System WA5363907	177	0	0	0	1.6 ppbbelow the action level
Mutiny View Manor Community Club WA5357930	173	0	0	0	0.7 ppbbelow the action level
Camano West Water Association WA5310755	167	0	0	0	0 ppbbelow the action level
Bon Air Community Club INC. WA5307630	160	0	0	0	2.3 ppbbelow the action level
Sunset Water Distribution Assoc WA5386202	159	0	0	0	0 ppbbelow the action level
Tyee Beach Water Association WA5390100	158	0	0	0	0 ppbbelow the action level
Mutiny Bay Park Water Association WA5357740	156	0	0	0	2.1 ppbbelow the action level
Lighthouse Shores WA5347200	152	0	0	0	3.2 ppbbelow the action level
Rhodena Beach Water District WA5372150	152	0	0	0	10 ppbbelow the action level
Fircrest Community Water System WA5324529	150	0	0	0	3.6 ppbbelow the action level
Possession Shores INC WA5369020	150	0	0	0	2.5 ppbbelow the action level
Sunlight Shores Country Club WA5333039	150	0	0	0	0 ppbbelow the action level
Wagon Wheel WA5392070	150	0	0	0	0.9 ppbbelow the action level
Thunder Ridge Water System WA5388200	145	0	0	0	0.4 ppbbelow the action level
Race Lagoon Heights Association WA5370650	141	0	0	0	0.8 ppbbelow the action level
Race Lagoon Water Association WA5303741	141	0	0	0	7.1 ppbbelow the action level
Valley High Park WA5390976	141	0	0	0	2.3 ppbbelow the action level
Lakeview Terrace WA5345364	140	0	0	0	0.6 ppbbelow the action level
Sunset Ridge Community Assn WA5386158	140	0	0	0	0 ppbbelow the action level
Lake Grove Water Association WA5343940	134	0	0	0	1.2 ppbbelow the action level
Maple Glen Community Association WA5351115	130	0	0	0	0 ppbbelow the action level
Teronda West Country Club Assn. WA5387520	127	0	0	0	1.4 ppbbelow the action level
Waterloo Acres Community Water Sys WA5393580	125	0	0	0	9.6 ppbbelow the action level
Camano Sunrise Water Assn #2 WA5329669	122	0	0	0	2 ppbbelow the action level
Scenic Beach Water Company WA5376500	122	0	0	0	0 ppbbelow the action level
Indian Ridge Water Company WA5335640	120	0	0	0	0 ppbbelow the action level
Livingston Bay Community Assn WA5347628	120	0	0	0	2 ppbbelow the action level
O-Zi-Ya Community Club WA5362640	120	0	0	0	0 ppbbelow the action level
Whispering Pines Homeowners Coop WA5388215	116	0	0	0	0 ppbbelow the action level
Elgerwood Maintenance Association WA5309131	112	0	0	0	1.8 ppbbelow the action level
Bush Point Trac Park WA5309900	111	0	0	0	0.6 ppbbelow the action level
Idlewood Community WA5335370	111	0	0	0	0 ppbbelow the action level
Holmes Harbor Water Co WA5333870	110	0	0	0	2.1 ppbbelow the action level
Twin View Estates Community Assoc WA5390032	110	0	0	0	1.2 ppbbelow the action level
Skyline West Community Club WA5380212	109	0	0	0	0.5 ppbbelow the action level
Lake-O-The-Woods WA5323456	108	0	0	0	4.5 ppbbelow the action level
Waynes Ridge Water Assoc WA5393909	108	0	0	0	2.8 ppbbelow the action level
Woodland Estates WA5398183	106	0	0	0	0 ppbbelow the action level
Fairway Estates INC WA5324524	100	0	0	0	0.8 ppbbelow the action level
Cornet Bay Heights Water Assn INC WA5315020	99	0	0	0	3.4 ppbbelow the action level
Tyee Beach 2 Water Association WA5335671	98	0	0	0	2 ppbbelow the action level
Pheasant Farm Acres WA5367187	95	0	0	0	2.1 ppbbelow the action level
Wheel Estates Park WA5395942	95	0	0	0	0.6 ppbbelow the action level
Ahearn Water System WA5325384	91	0	0	0	0.6 ppbbelow the action level
Pioneer Park Water System WA5367717	91	0	0	0	0.5 ppbbelow the action level
Pattons Retreat Water Assn WA5366588	90	0	0	0	1 ppbbelow the action level
Widarama Beach Water Rights Assn. WA5396750	85	0	0	0	1.9 ppbbelow the action level
Utsalady Water WA5390847	80	0	0	0	0.7 ppbbelow the action level
Camano Shores Community WA5310744	79	0	0	0	0 ppbbelow the action level
Fort Knox Mobile Home Park WA5359576	79	0	0	0	2 ppbbelow the action level
Scenic Heights W a INC WA5376520	78	0	0	0	2 ppbbelow the action level
Camano Sunrise Water Assn #1 WA5310746	76	0	0	0	0.8 ppbbelow the action level
North Boon Water System WA5318821	75	0	0	0	1.1 ppbbelow the action level
Tel Company 3 WA5393945	75	0	0	0	0 ppbbelow the action level
Davis Landing Water System WA5318140	74	0	0	0	1.7 ppbbelow the action level
Silver Lake Rd Acreage Tracts WA5310587	73	0	0	0	2.6 ppbbelow the action level
Lone Lake Shores Community Assn WA5347893	71	0	0	0	0 ppbbelow the action level
Highland Meadows WA5332785	70	0	0	0	2.2 ppbbelow the action level
Tel Company 4 WA5376976	69	0	0	0	0.5 ppbbelow the action level
Mabana Shores Association WA5349600	68	0	0	0	9.8 ppbbelow the action level
Fir Grove Mobile Park WA5325137	65	0	0	0	0 ppbbelow the action level
Kineth Claim Community Water Assoc. WA5314371	65	0	0	0	0 ppbbelow the action level
Point Allen Water Association WA5368060	65	0	0	0	1.8 ppbbelow the action level
Polnell Heights Water Association WA5368370	65	0	0	0	10 ppbbelow the action level
Crescent Acres Water Association WA5315930	64	0	0	0	3.8 ppbbelow the action level
Highland Trace Water Co INC WA5332840	62	0	0	0	1.3 ppbbelow the action level
Whidbey Highlands Water Assoc WA5396050	62	0	0	0	1 ppbbelow the action level
Fields Water Association WA5352590	60	0	0	0	0.6 ppbbelow the action level
Island Park Mobile Home Park WA5329599	60	0	0	0	0 ppbbelow the action level
Mahoneyville Water Assoc WA5350295	60	0	0	0	0 ppbbelow the action level
Swanrun Water System WA5307663	60	0	0	0	0.9 ppbbelow the action level
Adams Rd Community Assn WA5301977	59	0	0	0	1.6 ppbbelow the action level
Sky Meadows Community Assoc. WA5342705	58	0	0	0	4.3 ppbbelow the action level
Norcliffe Water Association WA5384566	57	0	0	0	5.2 ppbbelow the action level
Pleasant View Water Company WA5367950	57	0	0	0	2.6 ppbbelow the action level
Bayshore Water System WA5304930	56	0	0	0	0 ppbbelow the action level
Shangri-La Shores INC WA5377850	56	0	0	0	2.2 ppbbelow the action level
Sleeper Acres Comm. Assoc. INC. WA5329901	56	0	0	0	3.5 ppbbelow the action level
Useless Bay Shores WA5333261	56	0	0	0	4.4 ppbbelow the action level
Bush Point Terrace Comm Club INC. WA5309930	55	0	0	0	1.2 ppbbelow the action level
Deer Lake Estates WA5318440	55	0	0	0	0 ppbbelow the action level
Forest Hills Park Community WA5309871	54	0	0	0	0 ppbbelow the action level
Utsalady Point WA5390850	54	0	0	0	0 ppbbelow the action level
West View Apartments Water System WA5305570	54	0	0	0	0.9 ppbbelow the action level
Camano Colony Water System INC WA5310595	53	0	0	0	2.2 ppbbelow the action level
Hope View Water Co WA5334300	53	0	0	0	0.7 ppbbelow the action level
Palisades Assn WA5365700	53	0	0	0	1.8 ppbbelow the action level
Mutiny Sands Club WA5357900	52	0	0	0	0.8 ppbbelow the action level
Pondilla Estates Community Assoc WA5368430	52	0	0	0	0 ppbbelow the action level
Bets Water System WA5339991	50	0	0	0	2.6 ppbbelow the action level
Del Bay WA5318575	50	0	0	0	0 ppbbelow the action level
Lyon Rd Community Association WA5314026	50	0	0	0	7 ppbbelow the action level
Oddfellows Park WA5335350	50	0	0	0	3.1 ppbbelow the action level
El Camano Community Club WA5322593	49	0	0	0	1.7 ppbbelow the action level
Brutus Water System WA5308914	48	0	0	0	2.2 ppbbelow the action level
Port Susan Terrace Water WA5368950	48	0	0	0	0.6 ppbbelow the action level
Double View Community Club WA5319900	47	0	0	0	0.7 ppbbelow the action level
Greenbank Estates Water System WA5329710	47	0	0	0	0.6 ppbbelow the action level
Pinewood Community Club INC WA5367704	47	0	0	0	2.1 ppbbelow the action level
North Beverly Beach Association WA5311239	46	0	0	0	0.5 ppbbelow the action level
Point Lowell/Parkside WA5368180	46	0	0	0	0.6 ppbbelow the action level
Suburban Hills Community Assoc WA5337911	46	0	0	0	0 ppbbelow the action level
Windmill Heights Comm Club WA5397440	45	0	0	0	0 ppbbelow the action level
Harbor Hill WA5331003	43	0	0	0	0.7 ppbbelow the action level
Westview Community Association WA5395375	43	0	0	0	0 ppbbelow the action level
Polnell Landing Water Assoc. WA5355476	41	0	0	0	0 ppbbelow the action level
Driftwood Heights #2 Community Assn WA5322871	40	0	0	0	0 ppbbelow the action level
Evergreen Valley View Water System WA5324170	40	0	0	0	1.2 ppbbelow the action level
Viewcrest Water System WA5391902	39	0	0	0	0 ppbbelow the action level
Cedarhearth Water WA5396889	37	0	0	0	3.8 ppbbelow the action level
Sandberg Water Assn WA5322691	37	0	0	0	0 ppbbelow the action level
West Beach Road Association WA5317970	37	0	0	0	0 ppbbelow the action level
Doyle Water Association WA5319155	36	0	0	0	2.8 ppbbelow the action level
San Juan Estates Water Association WA5318605	36	0	0	0	5.2 ppbbelow the action level
Leisure Acres Water Association WA5346695	35	0	0	0	14 ppbbelow the action level
Rockaway Beach Community Assn WA5306014	35	0	0	0	0.7 ppbbelow the action level
Saratoga Shores Community Club WA5376250	35	0	0	0	0 ppbbelow the action level
Bakerview Terrace Comm Club WA5304025	34	0	0	0	2 ppbbelow the action level
Bayview Meadows Water System WA5327849	34	0	0	0	0 ppbbelow the action level
Olympic View Estates WA5342421	33	0	0	0	0 ppbbelow the action level
Wildes Grove Community Water Sys WA5326911	33	0	0	0	1 ppbbelow the action level
Lancaster Heights #1 Water System WA5345750	32	0	0	0	2.5 ppbbelow the action level
Care Free Acres WA5311135	30	0	0	0	12.7 ppbbelow the action level
Koontz Ranch Water System WA53AD532	30	0	0	0	3.8 ppbbelow the action level
Little Valley Apts. WA5322057	30	0	0	0	3.2 ppbbelow the action level
Saratoga Terrace Water WA5310516	30	0	0	0	5 ppbbelow the action level
Hillcrest Homestead Tracts Water WA5333120	29	0	0	0	3.1 ppbbelow the action level
Eaglecrest Water & Road Association WA5326091	28	0	0	0	2.2 ppbbelow the action level
Faranda Water Associaton WA5324643	28	0	0	0	1 ppbbelow the action level
Goss Lakeridge Acres Association WA5322070	27	0	0	0	8.7 ppbbelow the action level
Timaru Community Water Association WA5398215	27	0	0	0	11.8 ppbbelow the action level
Cascade View Road Water System WA5328020	26	0	0	0	0 ppbbelow the action level
Longwood Water Association WA5348160	25	0	0	0	4.5 ppbbelow the action level
West Deer Lake #1 WA5300615	24	0	0	0	0 ppbbelow the action level
Frostad Farms Water Assn WA5326648	25	0	0	0	not reported

Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. 3 systems in this table are at or above it. What an action level means

USGS · Monitoring stations

The water, more recently.

Available station readings in Island County, Washington. Each measurement keeps its time, unit and original source.

These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.

Recent observations load when this section comes into view.

How these readings update

We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.

Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.

Your next step

Water testing, reports & local help.

Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.

Official national directories

Water testing

Find your state’s private-well program

EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-05

Water testing

Find a certified drinking-water laboratory

Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-08-11

Public records

Find your utility’s Consumer Confidence Report

EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.

U.S. Environmental Protection Agency
Source reviewed 2026-09-15 · Source updated 2026-09-09

Public records

Explore USGS water observations

Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.

U.S. Geological Survey
Source reviewed 2026-09-15

A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.

Understand water testing and laboratory reports

Resource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction

Explore your area

Local coverage in Island County

8ZIP areas in this overview

Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.

Towns and communities

Camano
Clinton
Coupeville
Freeland
Langley
Oak Harbor
Whidbey Island Station

Explore water-system records Find water-testing resources

View ZIP areas and understand coverage

98236Clinton
98239Coupeville
98249Freeland
98253
98260Langley
98277Oak Harbor
98278Whidbey Island Station
98282Camano

These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.

Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.

Beyond this county page

Keep reading. Compare nearby.

PFASChoosing a PFAS filterPFAS was found in 1 of the 5 systems EPA surveyed here. See how to check a filter’s certified PFAS reduction.LeadChoosing a lead filter29 systems here have reached the lead action level. See how to check a filter’s lead-reduction certification.Your utilityFind your annual water reportConfirm the supplier on your bill, then read its Consumer Confidence Report for local results.

Counties near Island County

All Washington counties

Sources and scope

EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.

Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.

Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.