Government sampling by the U.S. Geological Survey in Madison County's aquifer 337FRPN shows selenium was detected in local wells with a median concentration of 0.1 micrograms per liter and a range from 0.03 to 0.6 micrograms per liter. None of these measurements exceeded federal safety thresholds.
What do 'detected', 'median', and 'range' tell us in Madison County's selenium record?
'Detected' means that selenium was measured in 10 out of 17 sample results, while 7 results were below the reporting limit, indicating no measurable selenium was found in those instances. The 'median' value of 0.1 micrograms per liter represents the middle point of all selenium concentrations recorded, meaning half the results were below this value and half were above. The 'range' from 0.03 to 0.6 micrograms per liter shows the lowest and highest concentrations measured during sampling from wells between 30 and 79 feet deep. Together, these terms describe how selenium levels in the sampled area vary but do not specify the content in any individual household's water.
What steps should households take to clarify their water's heavy metal status?
Before considering advanced treatment, it is wise to follow an order of checks starting with the simplest:
- Review any recent water quality reports if receiving water from a public system, as those often include metals testing results.
- Examine plumbing materials and water discoloration or taste changes that may indicate contamination from household pipes.
- If concerns remain, have your specific well or tap water tested by a certified laboratory to measure selenium and other metals precisely.
Only a direct test of your own water source can confirm your household’s specific metal levels.
How does the Pentair Heavy Metals Filter address selenium and similar contaminants?
This specialized system uses filtration media designed to reduce dissolved heavy metals such as selenium by capturing them as water passes through. It does not add chemicals but physically removes metals from your water supply, providing an effective method to lower metal concentrations when existing equipment is insufficient. The unit ships ready to configure for home use without additional services.
Can household plumbing affect heavy metal measurements independently of source water?
Yes. Plumbing materials like copper, galvanized steel, or solder containing metals may contribute to elevated metal levels seen at the tap, unrelated to what is in the aquifer or municipal supply. Older plumbing is more likely to release metals through corrosion or wear. This means your water’s metal content could differ substantially from area groundwater samples. Testing both source water and plumbing effects helps identify sources of metals and informs treatment choices.
What are the long-term effects of not addressing heavy metal presence in household water?
Leaving heavy metals untreated in household water can potentially contribute to aesthetic issues such as metallic taste or staining on fixtures and laundry. While selenium levels found in Madison County groundwater samples do not exceed federal thresholds, consistent exposure to metals above what your current equipment can handle can degrade water quality and may require upgraded filtration. Monitoring and treatment adjustments prevent gradual accumulation or increased exposure over time.
In summary, government sampling provides general insight into selenium presence in Madison County’s aquifer but cannot specify individual household water quality. The best approach starts with basic checks, followed by precise testing if needed, and if existing systems struggle, technologies like the Pentair Heavy Metals Filter offer a practical option to reduce metals at home effectively.
Where this information comes from
Source: USGS groundwater sampling. Sampled 2022-03-30. These figures describe groundwater sampled in this area. They are not a test of any individual private well - only a test of that well can establish its own water.
On record: U.S. Geological Survey sampling of Selenium in the 337FRPN aquifer (Madison County): 17 results from 7 wells, median 0.1 ug/L, range 0.03-0.6 ug/L; none above any federal threshold
- ✓ 90-Day Money-BackNo restocking fees — return within 90 days.
- ✓ Manufacturer WarrantyGenuine Fleck · Pentair · VIQUA equipment.
- ✓ Free Expert SizingTalk to a specialist and buy the right system the first time.