PlainWater
Counties → Texas

Denton County, Texas

Water Systems
98
Population Served
811,262
Total Violations
10,762
224 health-based
PFAS Detected
26
of 27 tested

Violation Analysis

95.9%
Systems with Violations
109.8
Avg Violations per System
2.1%
Health-Based Violations

Water Source Types

SW
27 systems (28%)
GW
23 systems (23%)

PFAS Contamination

27
Systems Tested
26
PFAS Detected
96.3%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Denton Texas water systems by violation status, EPA SDWIS records.

No violations on record (1) One or more violations (49)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
City of Denton 150,037 13 Detected
City of Lewisville 140,880 0 Detected
Mustang Sud 110,826 48 Detected
Town of Flower Mound 80,000 34 Detected
City of the Colony 45,367 11 Detected
Town of Little Elm 41,000 6 Detected
City of Corinth 23,213 46 Detected
Lake Cities Municipal Utility Authority 17,826 13 Detected
City of Highland Village 16,500 25 Detected
Trophy Club MUD 1 13,649 1 Clean
Denton County Fwsd 7 13,325 37 Detected
Argyle WSC 12,720 36 Detected
Bolivar WSC 11,901 33 Clean
Town of Northlake 10,430 23 Detected
City of Roanoke 10,127 87 Detected
City of Sanger 9,650 42 Detected
Cross Timbers WSC 8,751 35 Detected
City of Pilot Point 7,836 22 Clean
Town of Providence Village 7,128 57 Clean
City of Krum 6,062 88 Clean
Frisco West Wcid 5,805 52 Detected
Denton County Fwsd 11-A 5,160 14 Detected
Elm Ridge Wcid 5,061 38 Detected
City of Justin 4,409 24 Detected
City of Aubrey 4,058 116 -
Tpwd Ray Roberts Lake Isle Dubois 4,056 19 -
Denton County Fwsd 11-B 3,897 8 -
Denton County Fwsd 8-B 3,090 21 -
City of Hackberry 2,979 84 Detected
Denton County Fwsd 8-A 2,955 18 -
Town of Ponder 2,711 30 -
Hilltown Addition 2,184 173 -
Denton County Fwsd 11-C 1,977 11 -
Creekside Water System 1,749 71 -
Black Rock WSC 1,680 75 -
Trail Creek Water System 1,509 31 -
Shale Creek Community 1,470 1 -
Foxbane Combined WS 1,455 114 -
Vacation Village 1,140 51 -
South Fork Mobile Home Park 1,050 45 -
Green Springs WSC 858 195 -
Longhorn Meadows Addition 855 10 -
Big Sky MUD 813 3 -
Camp Copass 800 114 -
Town of Lakewood Village 795 158 -
Wren Water System 759 17 -
Stony Hills Water System 723 19 -
Cinnamon Ridge 501 6 -
Saratoga Estates 483 28 -
Wynnwood Haven Estates 459 15 -

Other Counties in Texas

Harris County
1,292 systems · 6,016,117 served · 78,495 violations
Dallas County
37 systems · 3,180,170 served · 2,618 violations
Bexar County
82 systems · 2,376,579 served · 13,955 violations
Tarrant County
113 systems · 2,099,244 served · 10,564 violations
Travis County
138 systems · 1,547,700 served · 7,557 violations
Collin County
35 systems · 1,246,210 served · 1,149 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Denton County? ▼
Denton County has 10,762 total drinking water violations across 98 water systems, of which 224 are health-based violations. 95.9% of systems have at least one violation.
How many people get water from Denton County systems? ▼
Water systems in Denton County serve approximately 811,262 people through 98 public water systems.
Has PFAS been detected in Denton County water? ▼
Of 27 water systems tested for PFAS in Denton County, 26 had PFAS detected (96.3% detection rate).
What types of water sources supply Denton County? ▼
Water systems in Denton County use SW (27 systems), GW (23 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 2.1% of Denton County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.