Whatcom County, Washington — public water systems

183 active public water systems serve Whatcom County, reporting 260K people served.

Dataset updated July 2026 . Source: EPA SDWIS/ECHO, refreshed quarterly.

Active systems

183

Population served

260K

Community systems

101

Groundwater share

88%

Water systems in Whatcom County

Active public water systems in Whatcom County, Washington
#	Water system	County	Population served	Type	Source
1	Bellingham-Water Division City of	Whatcom	141,127	Community	Surface water
2	Ferndale	Whatcom	19,305	Community	Groundwater
3	Lynden Water Department	Whatcom	17,969	Community	Surface water
4	Lwwsd - South Shore Water System	Whatcom	10,028	Community	Surface water
5	Birch Bay Water & Sewer District	Whatcom	9,046	Community	Purchased groundwater
6	Blaine City of	Whatcom	6,319	Community	Groundwater
7	Everson City of	Whatcom	3,893	Community	Groundwater
8	Columbia Valley Water District	Whatcom	2,648	Community	Groundwater
9	Nooksack Water Dept	Whatcom	2,427	Community	Purchased groundwater
10	Glacier Water District	Whatcom	2,383	Community	Groundwater
11	Sandy Point Improvement Co	Whatcom	2,098	Community	Groundwater
12	Deer Creek Water Assoc.	Whatcom	2,000	Community	Groundwater
13	Glenhaven Lakes Club	Whatcom	1,780	Community	Groundwater
14	Sumas Water Dept	Whatcom	1,740	Community	Groundwater
15	Pole Road Water Association	Whatcom	1,545	Community	Groundwater
16	Mt Baker Ski Area - White Salmon	Whatcom	1,501	Transient non-community	Surface water
17	Point Roberts Water District No 4	Whatcom	1,440	Community	Groundwater
18	Whatcom County Water Dist #7	Whatcom	1,410	Community	Purchased surface water
19	Whatcom County Water Dist #2	Whatcom	1,353	Community	Purchased surface water
20	Nooksack Valley Water Association	Whatcom	1,343	Community	Purchased groundwater
21	Birch Bay Square Water Operation	Whatcom	915	Non-transient non-community	Groundwater
22	Meridian School Complex	Whatcom	900	Non-transient non-community	Purchased groundwater
23	Newhalem Campground & Visitor Ctr	Whatcom	800	Transient non-community	Purchased groundwater
24	Whatcom County Water Dist 13	Whatcom	795	Community	Groundwater
25	Mount Baker School District-Deming	Whatcom	700	Non-transient non-community	Groundwater
26	Glen Community Association	Whatcom	623	Transient non-community	Groundwater
27	Sumas Rural Water Association	Whatcom	612	Community	Purchased groundwater
28	Meadowbrook Water Association	Whatcom	579	Community	Purchased surface water
29	Acme Water District No 18	Whatcom	568	Community	Groundwater
30	Silver Lake Park - Main Campground	Whatcom	553	Transient non-community	Groundwater
31	Old Settlers Water Association	Whatcom	540	Community	Groundwater
32	Deming Water Assoc.	Whatcom	501	Community	Groundwater
33	Mount Baker Water Association	Whatcom	500	Community	Groundwater
34	Louie Joe Water Association	Whatcom	471	Community	Groundwater
35	Panorama Point Campground	Whatcom	450	Transient non-community	Groundwater
36	Delta Water Association	Whatcom	450	Community	Groundwater
37	Skookum Chuck Water Association	Whatcom	415	Community	Groundwater
38	Berthusen Road Water Association	Whatcom	409	Community	Purchased surface water
39	Colonial Creek Campground	Whatcom	407	Transient non-community	Groundwater
40	Deming Log Show & Rv	Whatcom	407	Transient non-community	Groundwater
41	Mt Baker Ski Area Heather Meadows	Whatcom	405	Transient non-community	Groundwater
42	Grandview-Northgate Industrial Park	Whatcom	400	Non-transient non-community	Groundwater
43	Northwest Water Assoc. Inc..	Whatcom	400	Community	Groundwater
44	Kendall Elementary School	Whatcom	400	Non-transient non-community	Groundwater
45	Whatcom Meadows	Whatcom	370	Transient non-community	Groundwater
46	Custer Water Association	Whatcom	365	Community	Groundwater
47	Lisecc	Whatcom	357	Community	Surface water
48	Bell Bay Jackson Water Association	Whatcom	350	Community	Purchased groundwater
49	Harmony Grade School	Whatcom	325	Non-transient non-community	Groundwater
50	Phillips 66 Company	Whatcom	288	Non-transient non-community	Surface water