Tap Truth EPA drinking water records, in plain English

County drinking water records

Collin County, TX drinking water systems

39 community water systems serve Collin County, TX, reporting 1,530,110 people served in all. A system that also serves other counties counts all of its customers here.

6 of them (15%) had at least one health-based violation in the last 10 years. 12 systems still have one unresolved.

7 rely mainly on groundwater and 32 on surface water, counting water bought from other systems.

36 systems filed a lead service line inventory listing 1 lead line, 178 galvanized lines that must be replaced and 20,044 lines of unknown material.

Community water systems
39
People served, sum of each system's own figure
1,530,110
Systems with a health-based violation, last 10 years
6
Systems with one unresolved
12
Lead service lines in inventories
1

Water systems serving Collin County

39 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
City of Plano Plano 292,059 Purchased surface water 0 0 0
City of Frisco Frisco 231,910 Purchased surface water 0 0 0
City of McKinney McKinney 224,043 Purchased surface water 0 0 0
City of Richardson Richardson 122,615 Purchased surface water 0 0 0
Mustang SUD Celina, Gunter and 8 more and land outside them 110,826 Purchased surface water 0 1 0
City of Allen Allen 104,870 Purchased surface water 0 0 0
City of Celina Celina 52,701 Purchased surface water 0 0 1
City of Wylie Wylie 47,322 Purchased surface water 0 0 0
Town of Prosper Prosper 42,598 Purchased surface water 0 0 0
City of Princeton Princeton 37,019 Purchased surface water 0 0 0
City of Sachse Sachse 30,630 Purchased surface water 0 0 0
Culleoka WSC Princeton and land outside it 24,615 Purchased surface water 0 1 0
City of Anna Anna 23,960 Purchased surface water 2 2 0
City of Murphy Murphy 21,082 Purchased surface water 0 0 0
City of Melissa Melissa and land outside it 18,020 Purchased surface water 0 0 0
East Fork SUD Wylie and Rowlett and land outside them 17,589 Purchased surface water 0 0 0
Bear Creek SUD Lavon and Wylie and land outside them 15,822 Purchased surface water 0 0 0
Caddo Basin SUD Outside cities and towns 14,574 Purchased surface water 0 0 0
Wylie Northeast SUD Wylie and St. Paul 11,430 Purchased surface water 0 0 0
Town of Fairview Fairview 11,100 Purchased surface water 0 0 0
North Collin SUD Melissa and New Hope and land outside them 10,674 Purchased surface water 1 2 0
City of Josephine Josephine and land outside it 9,800 Purchased surface water 0 1 0
Copeville SUD Outside cities and towns 8,438 Purchased surface water 0 0 0
City of Lucas Lucas 8,378 Purchased surface water 0 0 0
City of Parker Parker 6,486 Purchased surface water 0 0 0
City of Farmersville Farmersville and land outside it 5,312 Purchased surface water 1 1 0
Nevada SUD Nevada and Royse City and land outside them 4,218 Purchased surface water 0 0 0
Verona SUD Outside cities and towns 3,672 Groundwater 0 1 0
Milligan WSC McKinney and Lowry Crossing and land outside them 3,364 Purchased surface water 0 0 0
North Custer Road Plant Outside cities and towns 2,754 Groundwater 0 0 0
Frognot SUD Outside cities and towns 2,643 Groundwater 0 0 0
Westminster SUD Westminster and land outside it 2,424 Groundwater 0 0 0
Desert WSC Outside cities and towns 2,091 Groundwater 1 2 No inventory
Seis Lagos Utility District Seis Lagos 2,037 Purchased surface water 0 2 0
City of Blue Ridge Blue Ridge 1,189 Groundwater 0 1 0
Weston WSC Weston and land outside it 912 Groundwater 1 5 No inventory
North Farmersville WSC Outside cities and towns 747 Purchased surface water 4 8 No inventory
Air Park Estates Outside cities and towns 96 Purchased surface water 0 0 0
North Texas MWD Wylie WTP Wylie 90 Surface water 0 0 0

Cities and towns in Collin County

25 places

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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