Tapcensus

Thallium violations in Nevada

9 active public water systems in Nevada had a Thallium violation in the past three years. What Thallium is and why it matters.

Health effects: Chronic thallium exposure causes hair loss, changes in blood chemistry, kidney damage, intestinal problems, and liver effects. It can also impair the nervous system. EPA has classified thallium as a possible human carcinogen (Group C). The very low MCL reflects its acute toxicity even at small doses.

Systems with a Thallium violation

Latest quarter first, then largest first
SystemServesStatusRules violated, 3 yrUnresolved
Town of Minden
Douglas County
3,500 5 0
Topaz Ranch Estates Gid and Water CO
Douglas County
1,545 6 0
Round Hill Gid
Douglas County
1,200 3 0
Alamo Sewer and Water Gid
Alamo · Lincoln County
900 9 1
Old River Water Company
Churchill County
300 7 0
Rancho Vista 3
Nye County
50 7 0
Rancho Vista 4
Nye County
50 6 2
Diamond Plastics
Humboldt County
38 5 0
Yomba Indian Reservation
Yomba Shoshone Tribe · County
30 12 5
About this data

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