Cyanide violations in Texas
104 active public water systems in Texas had a Cyanide violation in the past three years. What Cyanide is and why it matters.
Systems with a Cyanide violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Aqua WSC Bastrop County |
86,325 | 5 | 1 | |
|
Johnson County SUD Johnson County |
65,517 | 2 | 0 | |
|
City of Sherman Grayson County |
43,645 | 2 | 0 | |
|
Bethesda WSC Johnson County |
33,441 | 2 | 0 | |
|
City of Kerrville Kerr County |
30,530 | 3 | 0 | |
|
Benbrook Water Authority Tarrant County |
25,616 | 3 | 0 | |
|
Acton MUD Hood County |
20,458 | 2 | 0 | |
|
City of Athens Henderson County |
17,934 | 6 | 0 | |
|
City of Uvalde Uvalde County |
17,450 | 3 | 0 | |
|
City of Jacksonville Cherokee County |
14,420 | 3 | 0 | |
|
City of Willis Montgomery County |
14,133 | 9 | 2 | |
|
City of Van Alstyne Grayson County |
10,644 | 7 | 0 | |
|
Harris County Wcid 109 Harris County |
10,134 | 2 | 0 | |
|
Concord Robbins WSC Leon County |
10,035 | 5 | 1 | |
|
Sagemeadow Utility District Harris County |
6,975 | 2 | 0 | |
|
Two Way SUD Grayson County |
6,804 | 3 | 0 | |
|
North Park Pud Harris County |
6,708 | 3 | 0 | |
|
Brazoria County MUD 25 Brazoria County |
5,250 | 3 | 0 | |
|
Bethany SUD Johnson County |
4,503 | 3 | 1 | |
|
Thunderbird Utility District 1 Fort Bend County |
4,203 | 3 | 0 | |
|
City of Whitesboro Grayson County |
4,192 | 3 | 0 | |
|
South Newton WSC Newton County |
3,729 | 4 | 0 | |
|
Northwest Grayson County Wcid 1 Grayson County |
3,615 | 6 | 4 | |
|
City of Bandera Bandera County |
3,231 | 5 | 0 | |
|
City of Gunter Grayson County |
2,883 | 2 | 0 | |
|
City of Huntington Angelina County |
2,014 | 7 | 2 | |
|
City of Naples Morris County |
1,908 | 11 | 3 | |
|
City of Linden Cass County |
1,813 | 9 | 3 | |
|
Black Rock WSC Denton County |
1,764 | 3 | 0 | |
|
Glendale WSC Trinity County |
1,458 | 10 | 4 | |
|
Foxbane Estates PWS Denton County |
1,455 | 4 | 0 | |
|
Whippoorwill Bay Subdivision Hood County |
840 | 2 | 0 | |
|
Fulbrook Subdivision Water Plant Fort Bend County |
807 | 6 | 0 | |
|
Ruby Ranch WSC Hays County |
738 | 2 | 0 | |
|
Selkirk WSC Matagorda County |
678 | 3 | 0 | |
|
Old Chisolm Estates Wise County |
546 | 5 | 0 | |
|
Church Hill WSC Rusk County |
516 | 6 | 1 | |
|
Pine Colony Mobile Home Park Brazoria County |
450 | 11 | 4 | |
|
Buchanan Lake Village Llano County |
425 | 11 | 3 | |
|
Nci Building Systems Harris County |
403 | 5 | 3 | |
|
Doucette Water System Tyler County |
399 | 9 | 2 | |
|
Willow Wood Addition Meadow Vista Denton County |
375 | 3 | 0 | |
|
Lakeside Estates Subdivision Waller County |
366 | 12 | 6 | |
|
Frf Water Systems 1 3 4 5 6 7 8 Cooke County |
363 | 4 | 0 | |
|
Fishermans Paradise Johnson County |
351 | 6 | 0 | |
|
Songbird Addition Denton County |
342 | 4 | 0 | |
|
Texas Country Water Comal County |
321 | 7 | 0 | |
|
Rolling Oaks Subdivision Johnson County |
252 | 7 | 0 | |
|
Martin Lake Steam Electric Station Rusk County |
250 | 6 | 0 | |
|
Rockwell Acres Water System Randall County |
250 | 12 | 4 |
About this data
A system is counted once if any of its violations in the past three years involved Cyanide, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Cyanide 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. Retrieved from ECHO on Oct 11, 2026.