County · Texas
Denton County, Texas: drinking water records
This overview covers 27 ZIP codes and 79 community water systems in Denton County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Woodland Hills TX0610084 | 114 | 60 | 0 | 1 | 3.8 ppb |
| Mullins Mobile Home Park TX0610195 | 87 | 60 | 0 | 1 | 0 ppb |
| City of Denton TX0610002 | 150,037 | 240 | 4 | 0 | 1.5 ppb |
| City of Lewisville TX0610004 | 140,880 | 356 | 4 | 0 | 0 ppb |
| Mustang SUD TX0610036 | 110,826 | 605 | 3 | 0 | 1.3 ppb |
| Town of Flower Mound TX0610023 | 80,000 | 360 | 6 | 0 | 1.6 ppb |
| City of the Colony TX0610081 | 45,367 | 420 | 4 | 0 | 0.6 ppb |
| Town of Little Elm TX0610035 | 41,000 | 120 | 4 | 0 | 2.2 ppb |
| City of Corinth TX0610065 | 23,213 | 120 | 4 | 0 | 1 ppb |
| Lake Cities Municipal Utility Authority TX0610029 | 17,826 | 300 | 4 | 0 | 2.2 ppb |
| City of Highland Village TX0610080 | 16,500 | 420 | 5 | 0 | 2.6 ppb |
| Trophy Club MUD 1 TX0610018 | 13,649 | 120 | 1 | 0 | 0 ppb |
| Denton County FWSD 7 TX0610228 | 13,325 | 120 | 4 | 0 | 1.3 ppb |
| Argyle WSC TX0610019 | 12,720 | 540 | 4 | 0 | 1.7 ppb |
| Bolivar WSC TX0610049 | 11,901 | 900 | 0 | 0 | 0 ppb |
| Town of Northlake TX0610235 | 10,430 | 240 | 4 | 0 | 0 ppb |
| City of Sanger TX0610006 | 10,166 | 405 | 1 | 0 | 5.4 ppb |
| City of Roanoke TX0610008 | 10,127 | 120 | 4 | 0 | 1.3 ppb |
| Cross Timbers WSC TX0610020 | 8,751 | 480 | 6 | 0 | 1.2 ppb |
| City of Pilot Point TX0610005 | 7,836 | 391 | 0 | 0 | 0 ppb |
| City of Justin TX0610003 | 7,537 | 120 | 4 | 0 | 0 ppb |
| Town of Providence Village TX0610244 | 7,128 | 120 | 0 | 0 | 1.3 ppb |
| City of Krum TX0610007 | 6,062 | 600 | 0 | 0 | 4.9 ppb |
| Frisco West WCID TX0610253 | 5,805 | 240 | 4 | 0 | 1.1 ppb |
| Denton County FWSD 11-A TX0610259 | 5,160 | 120 | 1 | 0 | 1.8 ppb |
ZIP reports in Denton County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.