Tap Truth EPA drinking water records, in plain English

County drinking water records

Dallas County, TX drinking water systems

34 community water systems serve Dallas County, TX, reporting 3,020,837 people served in all. A system that also serves other counties counts all of its customers here.

9 of them (26%) had at least one health-based violation in the last 10 years. 14 systems still have one unresolved.

4 rely mainly on groundwater and 30 on surface water, counting water bought from other systems.

33 systems filed a lead service line inventory listing 9 lead lines, 630 galvanized lines that must be replaced and 375,955 lines of unknown material.

1 more system is placed in Dallas County, TX 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
34
People served, sum of each system's own figure
3,020,837
Systems with a health-based violation, last 10 years
9
Systems with one unresolved
14
Lead service lines in inventories
9

Water systems serving Dallas County

34 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
Dallas Water Utility Dallas 1,356,479 Surface water 0 0 0
City of Irving Irving 264,546 Purchased surface water 0 0 0
City of Garland Garland 248,822 Purchased surface water 0 0 0
City of Grand Prairie Grand Prairie 201,843 Purchased surface water 0 0 0
City of Mesquite Mesquite 152,020 Purchased surface water 0 0 9
City of Carrollton Carrollton 136,170 Purchased surface water 0 0 0
City of Richardson Richardson 122,615 Purchased surface water 0 0 0
City of Rowlett Rowlett 66,212 Purchased surface water 0 1 0
City of Desoto DeSoto 57,999 Purchased surface water 0 0 0
City of Cedar Hill Cedar Hill 50,904 Purchased surface water 0 1 0
City of Coppell Coppell 43,193 Purchased surface water 0 0 0
City of Lancaster Lancaster 40,449 Purchased surface water 0 0 0
City of Farmers Branch Farmers Branch 40,246 Purchased surface water 0 0 0
City of Duncanville Duncanville 39,413 Purchased surface water 0 0 0
City of Sachse Sachse 30,630 Purchased surface water 0 0 0
City of Balch Springs Balch Springs 28,300 Purchased surface water 1 1 0
City of University Park University Park 25,278 Purchased surface water 0 1 0
City of Seagoville Seagoville 20,156 Purchased surface water 1 0 0
City of Glenn Heights Glenn Heights and Oak Leaf 18,718 Purchased surface water 0 1 0
East Fork SUD Wylie and Rowlett and land outside them 17,589 Purchased surface water 0 0 0
Town of Addison Addison 17,257 Purchased surface water 0 0 0
Town of Highland Park Highland Park 8,959 Purchased surface water 0 0 0
Town of Sunnyvale Sunnyvale 8,839 Purchased surface water 0 0 0
City of Wilmer Wilmer 6,690 Purchased surface water 1 1 0
City of Hutchins Hutchins 5,902 Purchased surface water 0 2 0
City of Cockrell Hill Cockrell Hill 3,820 Purchased surface water 0 0 0
Combine WSC Combine 3,588 Purchased surface water 1 1 0
Lancaster MUD 1 Bear Creek Ranch 2,685 Purchased surface water 1 1 0
Danieldale Community Water Service DeSoto 702 Purchased surface water 0 0 0
Matthew Road WSC Grand Prairie 279 Groundwater 1 4 No inventory
D Bar B Mobile Home Ranch Outside cities and towns 267 Groundwater 21 3 0
Cottonwood Creek Mobile Home Park Wilmer 225 Groundwater 0 1 0
Parkerville East Mobile Home Park Lancaster 42 Groundwater 1 1 0
Dallas County Park Cities MUD Balch Springs Not reported Surface water 1 1 0

Systems placed by county record in Dallas 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
Dallas County MUD 4 County on record 150 Purchased surface water 0 0 0

Cities and towns in Dallas County

26 places

Back to Texas

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