Health effects: Carbon tetrachloride is classified by EPA as a probable human carcinogen (Group B2). Chronic exposure causes liver and kidney damage and is associated with liver cancer in animal studies. Acute high-dose exposure causes severe hepatotoxicity — nausea, vomiting, jaundice, and acute liver failure. Communities near contaminated groundwater plumes and historical industrial sites face the greatest long-term risk.
A system is counted once if any of its violations in the past three years involved Carbon Tetrachloride, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Carbon Tetrachloride 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.
Compliant
Compliant
No violations reported to EPA in the past three years.
At least one violation on record with EPA in the past three years. Many are monitoring or reporting lapses rather than contamination; the system page lists which rules were involved and whether each is still open.
EPA's designation, also called an enforcement priority, for a system with unresolved serious, multiple, or continuing violations. EPA expects the system and its state to act quickly to resolve them.
At least one open health-based violation: an exceedance of a maximum contaminant level or residual disinfectant level, or a treatment technique violation. Monitoring and reporting lapses do not raise this flag.