Tapcensus

Chlorine (MRDL) violations in Texas

971 active public water systems in Texas had a Chlorine (MRDL) violation in the past three years. What Chlorine (MRDL) is and why it matters.

Health effects: Acute high-dose exposure to chlorinated water can cause eye and nose irritation, stomach discomfort, and nausea. Chronic exposure above the MRDL is primarily a concern because elevated chlorine accelerates formation of trihalomethanes and haloacetic acids, which are associated with increased cancer risk over time.

Systems with a Chlorine (MRDL) violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Totalenergies Petrochemicals & Refining
Harris County
350 4 0
Chenango Ranch
Brazoria County
345 1 0
Hickory Hill Water
Wilson County
342 7 0
Songbird Addition
Denton County
342 4 0
City of Annona
Red River County
339 5 1
Long Creek Water
Hood County
339 2 1
City of Barry
Navarro County
336 3 0
Council Creek Village
Burnet County
333 4 2
Clearwater Distribution
Harrison County
330 6 3
Town of Pleasant Valley
Wichita County
330 2 0
Western Hills Crystal Springs Water
Montgomery County
330 5 1
George H Obrien JR VA Medical Center
Howard County
325 7 2
Lingleville Isd
Erath County
325 4 1
National Oilwell
Gray County
325 5 1
Town of Bayside
Refugio County
325 5 1
Trinity Rural WSC 2
Trinity County
322 4 0
Pioneer Estates
Bexar County
320 2 0
Baker Hughes Emmott RD Plant
Harris County
319 8 0
Turkey Municipal Water System
Hall County
317 7 3
Lake Louise Subdivision
Montgomery County
309 4 2
Heights Water
Smith County
306 5 1
Amberwood Water System
Randall County
300 7 2
City of Melvin
McCulloch County
300 5 2
Loop WSC
Gaines County
300 6 0
McMullen County Calliham
McMullen County
300 5 0
Panther Junction Plt
Brewster County
300 2 0
River Oaks Water System
Burnet County
300 5 1
Rough Creek Lodge
Erath County
298 3 0
Hill River Country Estates
Kerr County
297 7 4
Industrial Isd Inez Elementary
Victoria County
297 5 2
Goya Foods North American Processing Cen
Waller County
290 3 0
Whitney Resorts
Hill County
289 4 0
Shenandoah Estates
Cooke County
288 8 2
Tejas Landing Subdivision
Fort Bend County
288 4 2
Kirby Landing Community
Harris County
285 3 1
Lake Pointe Estates
Fort Bend County
285 2 0
Moores Water System
McLennan County
285 7 4
Round Rock Ranch Pud Utility
Williamson County
285 1 0
New Progress Water Spring Valley
Parker County
282 6 1
Wilderness Cove
Burnet County
282 1 0
Matthew Road WSC
Dallas County
279 5 3
R C WSC
Polk County
277 3 1
Borden County Water System
Borden County
275 4 0
Moortex WSC
Moore County
275 2 0
Clean Harbors Deer Park
Harris County
270 4 1
Enchanted Valley Estates WSC
Harris County
270 1 0
Trinity Presbyterian Church
Kendall County
270 6 0
City of Leona
Leon County
264 4 2
Highland Meadows Water System
Wise County
264 1 0
Montgomery County MUD 172
Montgomery County
264 1 0
About this data

A system is counted once if any of its violations in the past three years involved Chlorine (MRDL), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Chlorine (MRDL) alone.

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.