Tapcensus

Selenium violations in Texas

76 active public water systems in Texas had a Selenium violation in the past three years, 3 of them in the latest quarter of EPA's data. What Selenium is and why it matters.

Health effects: Chronic exposure above the MCL causes selenosis — characterized by hair and nail loss, peripheral neuropathy, fatigue, and gastrointestinal disturbance. Liver damage can occur with prolonged high intake. The margin between nutritional requirement and toxic dose is narrow, making the MCL an important threshold.

Systems with a Selenium violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Cattail Creek MHP
Erath County
135 7 1
Ponder Acres Water System
Denton County
129 4 0
Catalpa Villa
Randall County
114 13 4
Tara Park Water System
Waller County
113 13 4
Pleasure Point
Angelina County
110 12 3
Pine Oak Forest Water
Harris County
105 12 2
Blue Sage Properties
Bexar County
100 6 0
Little Lions Learning Academy
Bexar County
100 12 4
Gurudwara Sahib of Houston
Harris County
90 8 1
Blue Ridge Mobile Home Park
Kerr County
75 9 1
Woodland Shores Subdivision
Shelby County
75 13 3
Carol Norra Mobile Home Park
Harris County
63 10 4
Shelby Water
Shelby County
61 14 4
Harris County Sheriffs Substation
Harris County
60 6 0
Houston Suburban Heights MHP
Harris County
60 14 5
Stone Mountain Subdivision
Burnet County
60 6 0
Sunnyvale RV Park
Wise County
48 9 2
McElroy Ranch Water System
Brewster County
45 10 0
Lee Limas Mobile Home Park
El Paso County
39 13 4
Old Dominion Tyler Terminal
Smith County
37 5 0
City of Dayton Lakes
Liberty County
36 11 4
Town Bluff Water System
Tyler County
34 4 0
Shafter Mine
Presidio County
32 13 4
Endurance Lift Solutions Midland
Midland County
25 7 1
Hollister Business Park
Harris County
25 8 0
Texas Rain
Bastrop County
25 5 0
About this data

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