Tapcensus

Texas

Denton County drinking water quality

93 active public water systems serve 823,871 people in Denton County. 25 are compliant, 68 had at least one EPA violation in the past three years, 3 are designated serious violators, and 4 carry a health flag.

Active systems 93 82 community systems
People served 824K by public water systems
Systems with violations 68 73% of active systems, past 3 years
Serious violators 3 4 systems carry a health flag

Needs attention

Foxbane Estates PWS TX0610164 · Community water system · Serves 1,455 4 rules violated in the past three years
Denton Estates Mobile Home Park TX0610016 · Community water system · Serves 156 12 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR), Lead and Copper Rule (LCR), Lead and Copper Rule Revisions (LCRR), Public Notification Rule, and Revised Total Coliform Rule (RTCR).
Mullins Mobile Home Park TX0610195 · Community water system · Serves 87 10 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR), Lead and Copper Rule (LCR), Lead and Copper Rule Revisions (LCRR), and Public Notification Rule.
Knob Hill Water System Denton TX0610068 · Community water system · Serves 234 6 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR), Lead and Copper Rule (LCR), and Lead and Copper Rule Revisions (LCRR).
Lakeview Water Coop TX0610232 · Community water system · Serves 66 5 rules violated in the past three years. Unresolved: Consumer Confidence Rule (CCR), Lead and Copper Rule (LCR), Lead and Copper Rule Revisions (LCRR), and Public Notification Rule.

Community water systems

82 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
City of Denton
 150,037 0 0
City of Lewisville
 140,880 1 0
Mustang SUD
 127,911 3 1
Town of Flower Mound
 80,000 1 0
City of the Colony
 45,367 0 0
Town of Little Elm
 43,348 2 0
City of Corinth
 23,213 1 0
Lake Cities Municipal Utility Authority
 17,826 2 0
City of Highland Village
 16,500 2 1
Trophy Club MUD 1
 13,649 0 0
Denton County Fwsd 7
 12,837 2 2
Argyle WSC
 12,720 4 3
Bolivar WSC
 11,901 0 0
Town of Northlake
 10,430 0 0
City of Sanger
 10,166 2 0
City of Roanoke
 10,127 0 0
City of Hackberry
 9,593 3 3
Cross Timbers WSC
 8,751 4 1
City of Pilot Point
 7,836 2 1
City of Justin
 7,537 2 0
Town of Providence Village
 7,128 0 0
City of Krum
 6,062 2 0
Frisco West Wcid
 5,805 0 0
Elm Ridge Wcid
 5,061 0 0
City of Aubrey
 4,058 4 0
Town of Ponder
 2,851 1 0
Hilltown Addition
 2,439 4 2
Black Rock WSC
 1,764 3 0
Creekside Water System
 1,752 1 1
Trail Creek Water System
 1,509 3 1
Shale Creek Community
 1,476 0 0
Foxbane Estates PWS
 1,455 4 0
Vacation Village
 1,122 2 0
Southfork Denton Mobile Home Park
 1,050 1 0
Green Springs WSC
 858 3 1
Longhorn Meadows Addition
 855 0 0
Big Sky MUD
 813 1 0
Town of Lakewood Village
 795 4 0
Wren Water System
 759 1 0
Stony Hills Water System
 723 3 1
Cinnamon Ridge
 501 0 0
Saratoga Estates
 483 2 0
Wynnwood Haven Estates
 459 0 0
Ponderosa Ranch
 456 1 0
Harbor Grove WSC
 405 2 1
East Ponder Estates
 387 4 2
Rocky Point Community
 384 2 0
Stonecrest Estates
 381 0 0
Willow Wood Addition Meadow Vista
 375 3 0
Songbird Addition
 342 4 0
Non-community systems (11: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Tpwd Ray Roberts Lake Isle Dubois
 4,056 2 1
Camp Copass
 800 1 1
The Campsite RV Park
 447 1 1
Hidden Cove Park
 264 2 1
Ventura Luxury RV Community
 255 0 0
Countryside RV Resort
 188 0 0
Iaa Fort Worth North
 176 5 2
Als Convenience 5
 100 1 0
Northshore Club
 72 1 0
Oldcastle Northlake Plant
 60 3 0
Northlake Acres
 33 0 0
Inactive systems (178, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Texas records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.