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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 mercury for South 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 South Dakota public water system, so this page has no South Dakota city measurements or violation records for mercury. That is a gap in our data, not evidence that South Dakota water is free of mercury — 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 South Dakota system with a mercury 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 mercury detections have been reported in South Dakota cities.
Mercury is a highly toxic heavy metal that can cause severe neurological damage. It can damage the brain, kidneys, and developing fetus. Symptoms include personality changes, tremors, vision changes, deafness, muscle coordination loss, and memory problems. Mercury accumulates in the body over time, making chronic low-level exposure concerning.
Erosion of natural deposits; discharge from refineries and factories; runoff from landfills
Based on our analysis of EPA Safe Drinking Water Information System (SDWIS) data and local water utility reports,mercury has been detected in 0 South Dakota water systems.
The EPA MCL for mercury is 0.002 mg/L (2 ppb). The EPA MCL for mercury 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 South Dakota cities have mercury detected in their water supply. All tested cities are within EPA safety limits.
Kidney damage, neurological effects, developmental problems in children. The most vulnerable groups include pregnant women and developing fetuses.
The most effective methods for removing mercury include Reverse Osmosis, Distillation. Look for filters certified by NSF/ANSI for mercury reduction.
The EPA Maximum Contaminant Level (MCL) for mercury is 0.002 mg/L.The EPA MCL for mercury is 0.002 mg/L (2 ppb).
This page shows what South Dakota utilities reported for mercury. 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 mercury removal:
Removes 95-97% of mercury
Very effective
Some types more effective
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 mercury.