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Not health advice. Contact your local water utility for concerns.
Data from EPA Water Quality Reports. For official information, contact your water utility or health department.
Real EPA measurements of thallium for North Dakota water systems — Six-Year Review compliance samples 2012–2019 (historical). Methodology
We can't tell you from federal data yet. Our EPA dataset (SDWIS violations, the Six-Year Review, Lead and Copper Rule and UCMR 5 results) does not currently include any North Dakota public water system, so this page has no North Dakota city measurements or violation records for thallium. That is a gap in our data, not evidence that North Dakota water is free of thallium — or that it contains any.
To find the real number for your tap, read your utility's annual Consumer Confidence Report (every community water system must publish one by July 1), or test your water with a certified lab if you are on a private well.
Every North Dakota system with a thallium result in EPA's data, sorted by level. Averages of 2012–2019 finished-water samples, non-detects counted as zero — historical, not today's tap.
No thallium detections have been reported in North Dakota cities.
Thallium is a highly toxic heavy metal. Short-term exposure can cause gastrointestinal irritation, nerve damage, and blood chemistry changes. Long-term exposure causes hair loss, changes in blood chemistry, damage to liver, kidney, intestinal, and testicular tissues, and neurological damage including numbness and muscle weakness.
Leaching from ore-processing sites; discharge from electronics, glass, and drug factories
Based on our analysis of EPA Safe Drinking Water Information System (SDWIS) data and local water utility reports,thallium has been detected in 0 North Dakota water systems.
The EPA MCL for thallium is 0.002 mg/L (2 ppb). The EPA MCL for thallium is 0.002 mg/L. This limit is set to protect public health based on available scientific evidence about the contaminant's health effects.
0 North Dakota cities have thallium detected in their water supply. All tested cities are within EPA safety limits.
Hair loss, nerve damage, liver and kidney damage, gastrointestinal effects. The most vulnerable groups include children and pregnant women.
The most effective methods for removing thallium include Reverse Osmosis, Ion Exchange, Distillation. Look for filters certified by NSF/ANSI for thallium reduction.
The EPA Maximum Contaminant Level (MCL) for thallium is 0.002 mg/L.The EPA MCL for thallium is 0.002 mg/L (2 ppb).
This page shows what North Dakota utilities reported for thallium. It cannot tell you what is coming out of your own tap: utility samples are taken across a whole system and averaged, levels vary by address and season, and anything picked up after the water leaves the main never appears in their report.
Home water test kitscheck your own tap before buying any filterRecommended filtration methods for thallium removal:
Very effective for thallium
Effective for heavy metals
Removes heavy metals
Paid links. We earn a commission if you buy, at no extra cost to you. Filters are matched to the removal methods listed above for thallium.