Delaware County, Oklahoma — public water systems

35 active public water systems serve Delaware County, reporting 25K people served.

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

Active systems

Population served

25K

Community systems

Groundwater share

57.1%

Water systems in Delaware County

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Active public water systems in Delaware County, Oklahoma
#	Water system	County	Population served	Type	Source
1	Grove Municipal Services Auth.	Delaware	7,311	Community	Surface water
2	Grand Lake Pwa	Delaware	2,800	Community	Groundwater
3	Jay	Delaware	2,482	Community	Surface water
4	Ketchum Pwa Delaware Co System	Delaware	1,805	Community	Surface water
5	South Delaware Co Regional Water Auth.	Delaware	1,500	Community	Surface water
6	Delaware Co Rwd #10	Delaware	1,295	Community	Groundwater
7	West Siloam Springs	Delaware	877	Community	Purchased surface water
8	Colcord Pwa	Delaware	819	Community	Purchased surface water
9	Kansas Public Works Authority	Delaware	802	Community	Purchased surface water
10	Delaware Co Rwd # 12	Delaware	785	Community	Groundwater
11	Delaware Co Rwsg&Swm District 11	Delaware	750	Community	Purchased surface water
12	Delaware Co Rwd # 3	Delaware	653	Community	Surface water
13	Bernice Pwa	Delaware	504	Community	Purchased surface water
14	Delaware Co Rwd # 1	Delaware	465	Community	Purchased surface water
15	Delaware Co Rwd # 7	Delaware	400	Community	Purchased surface water
16	Lakewood Village	Delaware	293	Community	Groundwater
17	Carriage Hills	Delaware	160	Community	Groundwater
18	Hickory Meadows	Delaware	157	Community	Groundwater
19	Leisure Shores Water System Assn, Inc.	Delaware	150	Community	Groundwater
20	Holiday Shores Prop Assn	Delaware	136	Community	Groundwater
21	Spinnaker Point Estates	Delaware	120	Transient non-community	Surface water
22	Coves at Bird Island	Delaware	100	Community	Purchased surface water
23	Harbors View Marina	Delaware	100	Transient non-community	Purchased surface water
24	Caair	Delaware	100	Community	Groundwater
25	Oak Ridge Estates I & Ii Water Assoc.	Delaware	62	Community	Groundwater
26	Tulsa Ozark Club	Delaware	55	Transient non-community	Groundwater
27	West Bay Property Assn	Delaware	50	Transient non-community	Groundwater
28	Smittys Resort	Delaware	40	Transient non-community	Groundwater
29	Cayuga Park Resort	Delaware	40	Transient non-community	Groundwater
30	New Life Ranch, Flint Valley	Delaware	35	Community	Groundwater
31	Vfw Post 8380	Delaware	35	Transient non-community	Groundwater
32	North Grand Mobile and Rv Park	Delaware	28	Transient non-community	Groundwater
33	Eagles Landing Resort	Delaware	28	Transient non-community	Purchased groundwater
34	Grandview Village	Delaware	24	Transient non-community	Groundwater
35	Grand Country Lakeside Rv & MHP	Delaware	12	Transient non-community	Groundwater