Dallas County, Texas — public water systems

36 active public water systems serve Dallas County, reporting 3.2M people served.

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

Active systems

Population served

3.2M

Community systems

Groundwater share

16.7%

Water systems in Dallas County

Active public water systems in Dallas County, Texas
#	Water system	County	Population served	Type	Source
1	Dallas Water Utility	Dallas	1,356,479	Community	Surface water
2	City of Irving	Dallas	264,546	Community	Purchased surface water
3	City of Garland	Dallas	248,822	Community	Purchased surface water
4	City of Grand Prairie	Dallas	201,843	Community	Purchased surface water
5	Dallas Fort Worth International Airport	Dallas	177,673	Non-transient non-community	Purchased surface water
6	City of Mesquite	Dallas	152,020	Community	Purchased surface water
7	City of Carrollton	Dallas	136,170	Community	Purchased surface water
8	City of Richardson	Dallas	122,615	Community	Purchased surface water
9	City of Rowlett	Dallas	66,212	Community	Purchased surface water
10	City of Desoto	Dallas	57,999	Community	Purchased surface water
11	City of Cedar Hill	Dallas	50,904	Community	Purchased surface water
12	City of Coppell	Dallas	43,193	Community	Purchased surface water
13	City of Lancaster	Dallas	40,449	Community	Purchased surface water
14	City of Farmers Branch	Dallas	40,246	Community	Purchased surface water
15	City of Duncanville	Dallas	39,413	Community	Purchased surface water
16	City of Sachse	Dallas	30,630	Community	Purchased surface water
17	City of Balch Springs	Dallas	28,300	Community	Purchased surface water
18	City of University Park	Dallas	25,278	Community	Purchased surface water
19	City of Seagoville	Dallas	20,156	Community	Purchased surface water
20	City of Glenn Heights	Dallas	18,718	Community	Purchased surface water
21	Town of Addison	Dallas	17,257	Community	Purchased surface water
22	Town of Highland Park	Dallas	8,959	Community	Purchased surface water
23	Town of Sunnyvale	Dallas	8,839	Community	Purchased surface water
24	City of Wilmer	Dallas	6,690	Community	Purchased surface water
25	City of Hutchins	Dallas	5,902	Community	Purchased surface water
26	City of Cockrell Hill	Dallas	3,820	Community	Purchased surface water
27	Combine WSC	Dallas	3,588	Community	Purchased surface water
28	Lancaster MUD 1	Dallas	2,685	Community	Purchased surface water
29	Forterra Pressure Pipe Grand Prairie	Dallas	662	Non-transient non-community	Groundwater
30	Matthew Road WSC	Dallas	279	Community	Groundwater
31	D Bar B Mobile Home Ranch	Dallas	267	Community	Groundwater
32	Cottonwood Creek Mobile Home Park	Dallas	225	Community	Groundwater
33	Dallas County MUD 4	Dallas	150	Community	Purchased surface water
34	Parkerville East Mobile Home Park	Dallas	42	Community	Groundwater
35	Btb Dallas Mountain Creek Hauling Operat	Dallas	25	Transient non-community	Purchased groundwater